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agrego diagramas al repo.
authortailor <ndimov@gmail.com>
Mon, 19 Mar 2007 01:24:30 +0000 (01:24 +0000)
committertailor <ndimov@gmail.com>
Mon, 19 Mar 2007 01:24:30 +0000 (01:24 +0000)
Gaz: hackeo la PC de nico para robarme los diagramas :D

doc/diagramas/cuso_entregando_trabajo_practico.dia [new file with mode: 0644] patch | blob
doc/schema/core.dia [new file with mode: 0644] patch | blob

diff --git a/doc/diagramas/cuso_entregando_trabajo_practico.dia b/doc/diagramas/cuso_entregando_trabajo_practico.dia
new file mode 100644 (file)
index 0000000..c93119e
--- /dev/null
+++ b/doc/diagramas/cuso_entregando_trabajo_practico.dia
@@ -0,0 +1,1230 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<dia:diagram xmlns:dia="http://www.lysator.liu.se/~alla/dia/">
+  <dia:diagramdata>
+    <dia:attribute name="background">
+      <dia:color val="#ffffff"/>
+    </dia:attribute>
+    <dia:attribute name="pagebreak">
+      <dia:color val="#000099"/>
+    </dia:attribute>
+    <dia:attribute name="paper">
+      <dia:composite type="paper">
+        <dia:attribute name="name">
+          <dia:string>#A4#</dia:string>
+        </dia:attribute>
+        <dia:attribute name="tmargin">
+          <dia:real val="2.8222000598907471"/>
+        </dia:attribute>
+        <dia:attribute name="bmargin">
+          <dia:real val="2.8222000598907471"/>
+        </dia:attribute>
+        <dia:attribute name="lmargin">
+          <dia:real val="2.8222000598907471"/>
+        </dia:attribute>
+        <dia:attribute name="rmargin">
+          <dia:real val="2.8222000598907471"/>
+        </dia:attribute>
+        <dia:attribute name="is_portrait">
+          <dia:boolean val="true"/>
+        </dia:attribute>
+        <dia:attribute name="scaling">
+          <dia:real val="1"/>
+        </dia:attribute>
+        <dia:attribute name="fitto">
+          <dia:boolean val="false"/>
+        </dia:attribute>
+      </dia:composite>
+    </dia:attribute>
+    <dia:attribute name="grid">
+      <dia:composite type="grid">
+        <dia:attribute name="width_x">
+          <dia:real val="1"/>
+        </dia:attribute>
+        <dia:attribute name="width_y">
+          <dia:real val="1"/>
+        </dia:attribute>
+        <dia:attribute name="visible_x">
+          <dia:int val="1"/>
+        </dia:attribute>
+        <dia:attribute name="visible_y">
+          <dia:int val="1"/>
+        </dia:attribute>
+        <dia:composite type="color"/>
+      </dia:composite>
+    </dia:attribute>
+    <dia:attribute name="color">
+      <dia:color val="#d8e5e5"/>
+    </dia:attribute>
+    <dia:attribute name="guides">
+      <dia:composite type="guides">
+        <dia:attribute name="hguides"/>
+        <dia:attribute name="vguides"/>
+      </dia:composite>
+    </dia:attribute>
+  </dia:diagramdata>
+  <dia:layer name="Fondo" visible="true">
+    <dia:object type="Standard - Text" version="1" id="O0">
+      <dia:attribute name="obj_pos">
+        <dia:point val="8.9,2.7"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="8.9,1.25625;29.1938,3.7375"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Entregando Trabajo Practico#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="2"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="8.9,2.7"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="valign">
+        <dia:enum val="3"/>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Actor" version="0" id="O1">
+      <dia:attribute name="obj_pos">
+        <dia:point val="3.45,8.5"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="2.15,5.75;4.75,11.335"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="2.2,5.8"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="2.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="5.3999999999999995"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Usuario#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="3.45,10.95"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Actor" version="0" id="O2">
+      <dia:attribute name="obj_pos">
+        <dia:point val="3.52,20.32"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="2.22,17.57;4.82,23.155"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="2.27,17.62"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="2.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="5.3999999999999995"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Alumno#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="3.52,22.77"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Line" version="0" id="O3">
+      <dia:attribute name="obj_pos">
+        <dia:point val="3.52,17.62"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="2.94948,11.1446;3.95052,17.6705"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="3.52,17.62"/>
+        <dia:point val="3.45,11.2"/>
+      </dia:attribute>
+      <dia:attribute name="numcp">
+        <dia:int val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="22"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.5"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.5"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O2" connection="1"/>
+        <dia:connection handle="1" to="O1" connection="6"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Activity" version="0" id="O4">
+      <dia:attribute name="obj_pos">
+        <dia:point val="9.8,17.4"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="9.8,17.4;16.45,19.2"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="9.8,17.4"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="6.6500000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="1.8"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Enviando Ejercicio#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="13.125,18.45"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Activity" version="0" id="O5">
+      <dia:attribute name="obj_pos">
+        <dia:point val="9.8,11.3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="9.8,11.3;17.25,13.1"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="9.8,11.3"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.4500000000000002"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="1.8"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Reenviando Ejercicio#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="13.525,12.35"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O6">
+      <dia:attribute name="obj_pos">
+        <dia:point val="4.77,20.32"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="4.70497,17.9102;9.99546,20.385"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="4.77,20.32"/>
+        <dia:point val="9.8,18.3"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="7.285,19.31"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O2" connection="4"/>
+        <dia:connection handle="1" to="O4" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O7">
+      <dia:attribute name="obj_pos">
+        <dia:point val="4.77,20.32"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="4.70116,11.9469;10.1664,20.3888"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="4.77,20.32"/>
+        <dia:point val="9.8,12.2"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="7.285,16.26"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O2" connection="4"/>
+        <dia:connection handle="1" to="O5" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Actor" version="0" id="O8">
+      <dia:attribute name="obj_pos">
+        <dia:point val="27.5,6.15"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="26.2,3.4;28.8,9.035"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="26.25,3.45"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="2.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="5.3999999999999995"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Sercom#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="27.5,8.6"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Activity" version="0" id="O9">
+      <dia:attribute name="obj_pos">
+        <dia:point val="12.9,4.3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="12.9,4.3;19.95,6.1"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="12.9,4.3"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.0499999999999998"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="1.8"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Compilado Ejercicio#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="16.425,5.35"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Activity" version="0" id="O10">
+      <dia:attribute name="obj_pos">
+        <dia:point val="12.9,7.45"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="12.9,7.45;20.3,9.25"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="12.9,7.45"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.4000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="1.8"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Enviando Respuesta#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="16.6,8.5"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O11">
+      <dia:attribute name="obj_pos">
+        <dia:point val="26.25,6.15"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="19.8409,4.79702;26.3069,6.2069"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="26.25,6.15"/>
+        <dia:point val="19.95,5.2"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="23.1,5.675"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O8" connection="3"/>
+        <dia:connection handle="1" to="O9" connection="4"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O12">
+      <dia:attribute name="obj_pos">
+        <dia:point val="26.25,6.15"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="20.1144,6.08576;26.3142,8.74252"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="26.25,6.15"/>
+        <dia:point val="20.3,8.35"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="23.9252,6.84871"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O8" connection="3"/>
+        <dia:connection handle="1" to="O10" connection="4"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - Arc" version="0" id="O13">
+      <dia:attribute name="obj_pos">
+        <dia:point val="17.25,12.2"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="17.1869,8.35921;27.7029,12.4861"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="17.25,12.2"/>
+        <dia:point val="27.5,8.85"/>
+      </dia:attribute>
+      <dia:attribute name="curve_distance">
+        <dia:real val="1.451458656858829"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="22"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.5"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.5"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O5" connection="4"/>
+        <dia:connection handle="1" to="O8" connection="6"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - Arc" version="0" id="O14">
+      <dia:attribute name="obj_pos">
+        <dia:point val="17.25,12.2"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="17.1857,8.36397;26.4713,12.2526"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="17.25,12.2"/>
+        <dia:point val="26.25,8.85"/>
+      </dia:attribute>
+      <dia:attribute name="curve_distance">
+        <dia:real val="0.91448258537764826"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="22"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.5"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.5"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O5" connection="4"/>
+        <dia:connection handle="1" to="O8" connection="5"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Activity" version="0" id="O15">
+      <dia:attribute name="obj_pos">
+        <dia:point val="9.8,26.5"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="9.8,26.5;17.75,28.3"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="9.8,26.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.9500000000000002"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="1.8"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Ingresando al sistema#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="13.775,27.55"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O16">
+      <dia:attribute name="obj_pos">
+        <dia:point val="4.77,20.32"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="4.70028,20.2503;10.155,27.6724"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="4.77,20.32"/>
+        <dia:point val="9.8,27.4"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="7.285,23.86"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O2" connection="4"/>
+        <dia:connection handle="1" to="O15" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Activity" version="0" id="O17">
+      <dia:attribute name="obj_pos">
+        <dia:point val="26,21.1"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="26,21.1;33.65,22.9"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="26,21.1"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.6500000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="1.8"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Verificando Identidad#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="29.825,22.15"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O18">
+      <dia:attribute name="obj_pos">
+        <dia:point val="17.75,27.4"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="17.6822,22.5249;26.2354,27.4678"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="17.75,27.4"/>
+        <dia:point val="26,22.9"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="21.875,25.15"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O15" connection="4"/>
+        <dia:connection handle="1" to="O17" connection="5"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Activity" version="0" id="O19">
+      <dia:attribute name="obj_pos">
+        <dia:point val="9.8,20.65"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="9.8,20.65;18,22.45"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="9.8,20.65"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="8.1999999999999993"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="1.8"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Verificando Resultados#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="13.9,21.7"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O20">
+      <dia:attribute name="obj_pos">
+        <dia:point val="4.77,20.32"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="4.70955,20.2596;9.94358,21.9504"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="4.77,20.32"/>
+        <dia:point val="9.8,21.55"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="7.285,20.935"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O2" connection="4"/>
+        <dia:connection handle="1" to="O19" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Activity" version="0" id="O21">
+      <dia:attribute name="obj_pos">
+        <dia:point val="9.8,23.05"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="9.8,23.05;18.2,25.65"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="9.8,23.05"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="8.4000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="2.6000000000000001"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Ingresando Informacion
+Personal#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="14,24.1"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O22">
+      <dia:attribute name="obj_pos">
+        <dia:point val="4.77,20.32"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="4.69972,20.2497;10.0891,24.6934"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="4.77,20.32"/>
+        <dia:point val="9.8,24.35"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="7.285,22.335"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O2" connection="4"/>
+        <dia:connection handle="1" to="O21" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Activity" version="0" id="O23">
+      <dia:attribute name="obj_pos">
+        <dia:point val="9.75,14.5"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="9.75,14.5;17.45,16.3"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="9.75,14.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.7000000000000002"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="1.8"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Consultando Historial#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="13.6,15.55"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Activity" version="0" id="O24">
+      <dia:attribute name="obj_pos">
+        <dia:point val="21.75,14.55"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="21.75,14.55;33.9,16.35"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="21.75,14.55"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="12.15"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="1.8"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Solicitando Reenvio de Informacion #</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="27.825,15.6"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O25">
+      <dia:attribute name="obj_pos">
+        <dia:point val="17.45,15.4"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="17.3994,14.875;21.8046,15.8506"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="17.45,15.4"/>
+        <dia:point val="21.75,15.45"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="19.6,15.425"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O23" connection="4"/>
+        <dia:connection handle="1" to="O24" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O26">
+      <dia:attribute name="obj_pos">
+        <dia:point val="4.77,20.32"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="4.69929,15.0803;10.0667,20.3907"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="4.77,20.32"/>
+        <dia:point val="9.75,15.4"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="7.26,17.86"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O2" connection="4"/>
+        <dia:connection handle="1" to="O23" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O27">
+      <dia:attribute name="obj_pos">
+        <dia:point val="18,21.55"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="17.9473,21.225;26.0724,22.4022"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="18,21.55"/>
+        <dia:point val="26,22"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="22,21.775"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O19" connection="4"/>
+        <dia:connection handle="1" to="O17" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O28">
+      <dia:attribute name="obj_pos">
+        <dia:point val="18.2,24.35"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="18.1417,22.4976;26.1223,24.4083"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="18.2,24.35"/>
+        <dia:point val="26,22.9"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="22.1,23.625"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O21" connection="4"/>
+        <dia:connection handle="1" to="O17" connection="5"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O29">
+      <dia:attribute name="obj_pos">
+        <dia:point val="16.45,18.3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="16.3853,18.2353;26.1911,22.391"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="16.45,18.3"/>
+        <dia:point val="26,22"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="21.225,20.15"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O4" connection="4"/>
+        <dia:connection handle="1" to="O17" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O30">
+      <dia:attribute name="obj_pos">
+        <dia:point val="17.45,15.4"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="17.3799,15.3299;26.1824,22.1983"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="17.45,15.4"/>
+        <dia:point val="25.9,21.85"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="21.675,18.625"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O23" connection="4"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Message" version="0" id="O31">
+      <dia:attribute name="obj_pos">
+        <dia:point val="17.05,13"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="16.9793,12.9293;26.1593,21.5267"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="17.05,13"/>
+        <dia:point val="25.85,21.2"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="type">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="text_pos">
+        <dia:point val="21.45,17.1"/>
+      </dia:attribute>
+    </dia:object>
+  </dia:layer>
+</dia:diagram>
diff --git a/doc/schema/core.dia b/doc/schema/core.dia
new file mode 100644 (file)
index 0000000..acbf2ae
--- /dev/null
+++ b/doc/schema/core.dia
@@ -0,0 +1,5313 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<dia:diagram xmlns:dia="http://www.lysator.liu.se/~alla/dia/">
+  <dia:diagramdata>
+    <dia:attribute name="background">
+      <dia:color val="#ffffff"/>
+    </dia:attribute>
+    <dia:attribute name="pagebreak">
+      <dia:color val="#000099"/>
+    </dia:attribute>
+    <dia:attribute name="paper">
+      <dia:composite type="paper">
+        <dia:attribute name="name">
+          <dia:string>#A4#</dia:string>
+        </dia:attribute>
+        <dia:attribute name="tmargin">
+          <dia:real val="2.8222000598907471"/>
+        </dia:attribute>
+        <dia:attribute name="bmargin">
+          <dia:real val="2.8222000598907471"/>
+        </dia:attribute>
+        <dia:attribute name="lmargin">
+          <dia:real val="2.8222000598907471"/>
+        </dia:attribute>
+        <dia:attribute name="rmargin">
+          <dia:real val="2.8222000598907471"/>
+        </dia:attribute>
+        <dia:attribute name="is_portrait">
+          <dia:boolean val="false"/>
+        </dia:attribute>
+        <dia:attribute name="scaling">
+          <dia:real val="0.39272633194923401"/>
+        </dia:attribute>
+        <dia:attribute name="fitto">
+          <dia:boolean val="true"/>
+        </dia:attribute>
+        <dia:attribute name="fitwidth">
+          <dia:int val="1"/>
+        </dia:attribute>
+        <dia:attribute name="fitheight">
+          <dia:int val="1"/>
+        </dia:attribute>
+      </dia:composite>
+    </dia:attribute>
+    <dia:attribute name="grid">
+      <dia:composite type="grid">
+        <dia:attribute name="width_x">
+          <dia:real val="1"/>
+        </dia:attribute>
+        <dia:attribute name="width_y">
+          <dia:real val="1"/>
+        </dia:attribute>
+        <dia:attribute name="visible_x">
+          <dia:int val="1"/>
+        </dia:attribute>
+        <dia:attribute name="visible_y">
+          <dia:int val="1"/>
+        </dia:attribute>
+        <dia:composite type="color"/>
+      </dia:composite>
+    </dia:attribute>
+    <dia:attribute name="color">
+      <dia:color val="#d8e5e5"/>
+    </dia:attribute>
+    <dia:attribute name="guides">
+      <dia:composite type="guides">
+        <dia:attribute name="hguides"/>
+        <dia:attribute name="vguides"/>
+      </dia:composite>
+    </dia:attribute>
+  </dia:diagramdata>
+  <dia:layer name="Fondo" visible="true">
+    <dia:object type="UML - LargePackage" version="0" id="O0">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-18,-4"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-18.05,-5.05;43.05,34.05"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-18,-4"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="61"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="38"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#Core#</dia:string>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O1">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-13,26"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-13.05,25.95;-5.1,31.65"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-13,26"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.8499999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="5.5999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#curso#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#anio#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#cuatrimestre#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#numero#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#descripcion#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O2">
+      <dia:attribute name="obj_pos">
+        <dia:point val="8,-2"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="7.95,-2.05;17.2,6.05"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="8,-2"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="9.1500000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="8"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#instancia_de_entrega#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#ejercicio_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#A que ejercicio pertenece la entrega#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#numero#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Número de entrega (1ra instancia, 2da instancia, etc.)#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#inicio#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#DATE#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Fecha en la que se puede empezar a entregar#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#fin#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#DATE#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Fecha en la que vence la entrega#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#procesada#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#BOOL#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Indica si fue procesada la entrega o no#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#activo#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#BOOL#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#observaciones#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#TEXT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O3">
+      <dia:attribute name="obj_pos">
+        <dia:point val="30,0"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="29.95,-0.05;40.7,6.45"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="30,0"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="10.65"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="6.4000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#entrega#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#instancia_de_entrega_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#entregador_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#numero#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#fecha#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#DATE#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#observaciones#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#TEXT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O4">
+      <dia:attribute name="obj_pos">
+        <dia:point val="11,25"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="10.95,24.95;18.55,31.45"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="11,25"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="6.4000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#inscripto#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>#docente/alumno#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#entregador_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#usuario_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#curso_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#condicional#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#BOOL#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Sólo para alumnos#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#nota_cursada#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#FLOAT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Sólo para alumnos#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O5">
+      <dia:attribute name="obj_pos">
+        <dia:point val="30,7"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="29.95,6.95;40.7,15.05"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="30,7"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="10.65"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="8"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#correccion#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#instancia_de_entrega_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#entregador_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#entrega_numero#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#docente_entregador_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Docente que corrige#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#asignado#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#DATE#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Fecha en que se asigno la entrega al corrector#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#corregido#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#DATE#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Fecha en que se terminó de corregir (se puso la nota)#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#nota#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#FLOAT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#observaciones#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#TEXT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O6">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-7,2"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-7.05,1.95;0.9,7.65"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-7,2"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.8499999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="5.5999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#enunciado#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#nombre#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#descripcion#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Descripción un poco más detallada del ejercicio#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#usuario_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Autor#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#creado#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#DATE#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O7">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-9.2,1.3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-9.25,0.6;-7.00049,5.7"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-9.2,1.3"/>
+        <dia:point val="-8.12524,1.3"/>
+        <dia:point val="-8.12524,4.8"/>
+        <dia:point val="-7.05049,4.8"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#* #</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># 1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O16" connection="15"/>
+        <dia:connection handle="1" to="O6" connection="18"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O8">
+      <dia:attribute name="obj_pos">
+        <dia:point val="11,29.3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-5.2,28.6;11.05,30.4"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="11,29.3"/>
+        <dia:point val="2.925,29.3"/>
+        <dia:point val="2.925,29.5"/>
+        <dia:point val="-5.15,29.5"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O4" connection="12"/>
+        <dia:connection handle="1" to="O1" connection="13"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O9">
+      <dia:attribute name="obj_pos">
+        <dia:point val="11,28.5"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="8.7,20.15;11.05,29.4"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="11,28.5"/>
+        <dia:point val="8.75,28.5"/>
+        <dia:point val="8.75,20.2"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O4" connection="10"/>
+        <dia:connection handle="1" to="O32" connection="6"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O10">
+      <dia:attribute name="obj_pos">
+        <dia:point val="30,2.7"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="12.525,-3.7;30.05,3.6"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="30,2.7"/>
+        <dia:point val="29,2.7"/>
+        <dia:point val="29,-3"/>
+        <dia:point val="12.575,-3"/>
+        <dia:point val="12.575,-2"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># *#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># 1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O3" connection="10"/>
+        <dia:connection handle="1" to="O2" connection="1"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O11">
+      <dia:attribute name="obj_pos">
+        <dia:point val="30,11.3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="23.45,10.6;30.05,15.9"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="30,11.3"/>
+        <dia:point val="26,11.3"/>
+        <dia:point val="26,15"/>
+        <dia:point val="23.5,15"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>#corrector#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#* #</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># 1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O5" connection="14"/>
+        <dia:connection handle="1" to="O38" connection="2"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O12">
+      <dia:attribute name="obj_pos">
+        <dia:point val="30,9.7"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="23.45,9;30.05,15.9"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="30,9.7"/>
+        <dia:point val="25,9.7"/>
+        <dia:point val="25,15"/>
+        <dia:point val="23.5,15"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>#alumno/grupo#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#* #</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># 1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O5" connection="10"/>
+        <dia:connection handle="1" to="O38" connection="2"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O13">
+      <dia:attribute name="obj_pos">
+        <dia:point val="40.65,10.5"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="40.6,3.6;42.6,11.4"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="40.65,10.5"/>
+        <dia:point val="41.65,10.5"/>
+        <dia:point val="41.65,4.3"/>
+        <dia:point val="40.65,4.3"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># 0..1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># 1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O5" connection="13"/>
+        <dia:connection handle="1" to="O3" connection="15"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O14">
+      <dia:attribute name="obj_pos">
+        <dia:point val="0.85,6.3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="0.8,5.6;9.3,9.8"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="0.85,6.3"/>
+        <dia:point val="8.75,6.3"/>
+        <dia:point val="8.75,9"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>#autor (docente)#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#* #</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O6" connection="15"/>
+        <dia:connection handle="1" to="O32" connection="1"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O15">
+      <dia:attribute name="obj_pos">
+        <dia:point val="30,3.5"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="19.7,2.8;30.05,15.8"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="30,3.5"/>
+        <dia:point val="19.75,3.5"/>
+        <dia:point val="19.75,15"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>#alumno/grupo#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># *#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># 1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O3" connection="12"/>
+        <dia:connection handle="1" to="O38" connection="1"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O16">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-16,-3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-16.05,-3.05;-9.15,2.65"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-16,-3"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="6.7999999999999998"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="5.5999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#ejercicio#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#curso_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#numero#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#enunciado_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#grupal#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#BOOL#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Es grupal (o individual)#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O17">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-9.2,-2.3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-9.25,-3;8.05,1.6"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-9.2,-2.3"/>
+        <dia:point val="-0.6,-2.3"/>
+        <dia:point val="-0.6,0.7"/>
+        <dia:point val="8,0.7"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O16" connection="4"/>
+        <dia:connection handle="1" to="O2" connection="10"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O18">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-16,-0.3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-17.05,-1;-12.95,27.6"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-16,-0.3"/>
+        <dia:point val="-17,-0.3"/>
+        <dia:point val="-17,26.7"/>
+        <dia:point val="-13,26.7"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O16" connection="10"/>
+        <dia:connection handle="1" to="O1" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O19">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-10,13"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-10.05,12.95;-2.1,17.05"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-10,13"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.8499999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="4"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#tarea#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#nombre#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#descripcion#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O20">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-15,19"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-15.05,18.95;-7.45,23.05"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-15,19"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="4"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#dependencia#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#padre_tarea_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#hijo_tarea_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#orden#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#FLOAT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O21">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-15,20.9"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-16.05,13;-9.95,21.8"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-15,20.9"/>
+        <dia:point val="-16,20.9"/>
+        <dia:point val="-16,13.7"/>
+        <dia:point val="-10,13.7"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O20" connection="8"/>
+        <dia:connection handle="1" to="O19" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O22">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-7.5,21.7"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-7.55,16.95;-5.525,22.6"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-7.5,21.7"/>
+        <dia:point val="-6.075,21.7"/>
+        <dia:point val="-6.075,17"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O20" connection="11"/>
+        <dia:connection handle="1" to="O19" connection="6"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O23">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-15,7"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-15.05,6.95;-8.15,11.05"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-15,7"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="6.7999999999999998"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="4"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#ejercicio_tarea#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#ejercicio_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#tarea_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#orden#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#FLOAT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O24">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-15,8.9"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-16.05,2.55;-12.05,9.8"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-15,8.9"/>
+        <dia:point val="-16,8.9"/>
+        <dia:point val="-16,5.75"/>
+        <dia:point val="-12.6,5.75"/>
+        <dia:point val="-12.6,2.6"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O23" connection="8"/>
+        <dia:connection handle="1" to="O16" connection="6"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O25">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-8.2,9.7"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-8.25,9;-5.525,13.8"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-8.2,9.7"/>
+        <dia:point val="-6.075,9.7"/>
+        <dia:point val="-6.075,13"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O23" connection="11"/>
+        <dia:connection handle="1" to="O19" connection="1"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O26">
+      <dia:attribute name="obj_pos">
+        <dia:point val="0,22"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-0.05,21.95;7.55,28.45"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="0,22"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="6.4000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#tarea_ejecutada#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#tarea_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#entrega_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#inicio#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#DATE#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#fin#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#DATE#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#exito#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#BOOL#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#observaciones#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#TEXT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O27">
+      <dia:attribute name="obj_pos">
+        <dia:point val="7.5,24.7"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="7.45,5.7;30.05,25.6"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="7.5,24.7"/>
+        <dia:point val="14,24.7"/>
+        <dia:point val="14,6.4"/>
+        <dia:point val="30,6.4"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O26" connection="11"/>
+        <dia:connection handle="1" to="O3" connection="5"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O28">
+      <dia:attribute name="obj_pos">
+        <dia:point val="21,26"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="20.95,25.95;30.65,30.85"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="21,26"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="9.5999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="4.8000000000000007"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#grupo#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#entregador_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#curso_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#nombre#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#alumno_entregador_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Responsable del grupo (debe ser un inscripto alumno)#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O29">
+      <dia:attribute name="obj_pos">
+        <dia:point val="32,16"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="31.95,15.95;42.7,22.45"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="32,16"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="10.65"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="6.4000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#miembro#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>#docente/alumno#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>#Si hay alumnos y docentes mezclados, los docentes serían los tutores del grupo#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#grupo_entregador_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#inscripto_entregador_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#nota#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#FLOAT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#alta#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#DATE#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#baja#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#DATE#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O30">
+      <dia:attribute name="obj_pos">
+        <dia:point val="32,19.5"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="23.45,15;32.05,20.4"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="32,19.5"/>
+        <dia:point val="25,19.5"/>
+        <dia:point val="25,15.7"/>
+        <dia:point val="23.5,15.7"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>#miembro/tutor#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O29" connection="10"/>
+        <dia:connection handle="1" to="O38" connection="4"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O31">
+      <dia:attribute name="obj_pos">
+        <dia:point val="32,18.7"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="23.45,15;32.05,19.6"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="32,18.7"/>
+        <dia:point val="25,18.7"/>
+        <dia:point val="25,15.7"/>
+        <dia:point val="23.5,15.7"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O29" connection="8"/>
+        <dia:connection handle="1" to="O38" connection="4"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O32">
+      <dia:attribute name="obj_pos">
+        <dia:point val="5,9"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="4.95,8.95;12.55,20.25"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="5,9"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="11.199999999999999"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#usuario#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>#docente,alumno#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#tipo#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#CHAR(1)#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Tipo de usuario para polimorfismo: 'd' (docente), 'a' (alumno) o 'u' (usuario, en realidad no debería estar nunca).#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="1"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#username#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Para alumnos es el padrón, para docentes el usuario que les plazca (que no pueda ser un padrón válido).#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#email#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#password#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#nombre#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#telefono#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#usuario_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Tutor (solo para alumnos)#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#creado#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#DATE#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#activo#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#BOOL#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#observaciones#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#TEXT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O33">
+      <dia:attribute name="obj_pos">
+        <dia:point val="5,17.3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="1.95,9.4;5.05,18.2"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="5,17.3"/>
+        <dia:point val="2,17.3"/>
+        <dia:point val="2,10.1"/>
+        <dia:point val="5,10.1"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#tutor#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>#docente#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#0..1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>#alumno#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O32" connection="22"/>
+        <dia:connection handle="1" to="O32" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O34">
+      <dia:attribute name="obj_pos">
+        <dia:point val="30,8.9"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="17.1,-2;30.05,9.8"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="30,8.9"/>
+        <dia:point val="23.575,8.9"/>
+        <dia:point val="23.575,-1.3"/>
+        <dia:point val="17.15,-1.3"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O5" connection="8"/>
+        <dia:connection handle="1" to="O2" connection="4"/>
+      </dia:connections>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O35">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-2.15,13.7"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-2.2,13;0.05,24.8"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-2.15,13.7"/>
+        <dia:point val="-1.075,13.7"/>
+        <dia:point val="-1.075,23.9"/>
+        <dia:point val="0,23.9"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O19" connection="4"/>
+        <dia:connection handle="1" to="O26" connection="8"/>
+      </dia:connections>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O36">
+      <dia:attribute name="obj_pos">
+        <dia:point val="21,28.7"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-9.125,28;21.05,33.2"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="21,28.7"/>
+        <dia:point val="20,28.7"/>
+        <dia:point val="20,32.6"/>
+        <dia:point val="-9.075,32.6"/>
+        <dia:point val="-9.075,31.6"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O28" connection="10"/>
+        <dia:connection handle="1" to="O1" connection="6"/>
+      </dia:connections>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O37">
+      <dia:attribute name="obj_pos">
+        <dia:point val="30.6,30.3"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="23.45,19.9;34.65,31.2"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="30.6,30.3"/>
+        <dia:point val="31.6,30.3"/>
+        <dia:point val="31.6,20.6"/>
+        <dia:point val="23.5,20.6"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>#responsable#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#0..1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O28" connection="15"/>
+        <dia:connection handle="1" to="O38" connection="7"/>
+      </dia:connections>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O38">
+      <dia:attribute name="obj_pos">
+        <dia:point val="16,15"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="15.95,14.95;23.55,20.65"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="16,15"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="5.5999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#entregador#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#tipo#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#CHAR(1)#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Tipo de entregador para polimorfismo: 'd' (docente), 'a' (alumno), 'g' (grupo) o 'e' (entregador, en realidad no debería estar nunca).#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="1"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#nota#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#FLOAT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#activo#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#BOOL#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#observaciones#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#TEXT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+    </dia:object>
+    <dia:object type="UML - Generalization" version="1" id="O39">
+      <dia:attribute name="obj_pos">
+        <dia:point val="19.75,20.6"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="18.45,20.55;20.6,28.6"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="19.75,20.6"/>
+        <dia:point val="19.75,27.7"/>
+        <dia:point val="18.5,27.7"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="orth_autoroute">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O38" connection="6"/>
+        <dia:connection handle="1" to="O4" connection="9"/>
+      </dia:connections>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Generalization" version="1" id="O40">
+      <dia:attribute name="obj_pos">
+        <dia:point val="19.75,20.6"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="18.9,20.55;21.05,28.8"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="19.75,20.6"/>
+        <dia:point val="19.75,27.9"/>
+        <dia:point val="21,27.9"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="orth_autoroute">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O38" connection="6"/>
+        <dia:connection handle="1" to="O28" connection="8"/>
+      </dia:connections>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Note" version="0" id="O41">
+      <dia:attribute name="obj_pos">
+        <dia:point val="35,26"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="34.95,25.95;40.85,30.95"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="35,26"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="5.8000000000000007"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="4.9000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#_ es PK física
+# es PK lógica
++ es FK comp.
+- es para
+  polimorfismo#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="monospace" style="0" name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="35.35,27.2"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+  </dia:layer>
+</dia:diagram>
Sistema de entrega electrónica de Taller de Programación I