switched off. Can be changed any time, but changes only take effect when
the periodic timer fires or C<ev_periodic_again> is being called.
+=item ev_tstamp at [read-only]
+
+When active, contains the absolute time that the watcher is supposed to
+trigger next.
+
=back
Example: Call a callback every hour, or, more precisely, whenever the
C<ev_default_fork> cheats and calls it in the wrong process, the fork
handlers will be invoked, too, of course.
+=head3 Watcher-Specific Functions and Data Members
+
=over 4
=item ev_fork_init (ev_signal *, callback)
Stops the watcher if it is active. Again, no C<loop> argument.
-=item w->again () C<ev::timer>, C<ev::periodic> only
+=item w->again () (C<ev::timer>, C<ev::periodic> only)
For C<ev::timer> and C<ev::periodic>, this invokes the corresponding
C<ev_TYPE_again> function.
-=item w->sweep () C<ev::embed> only
+=item w->sweep () (C<ev::embed> only)
Invokes C<ev_embed_sweep>.
-=item w->update () C<ev::stat> only
+=item w->update () (C<ev::stat> only)
Invokes C<ev_stat_stat>.
=head1 MACRO MAGIC
-Libev can be compiled with a variety of options, the most fundemantal is
-C<EV_MULTIPLICITY>. This option determines whether (most) functions and
-callbacks have an initial C<struct ev_loop *> argument.
+Libev can be compiled with a variety of options, the most fundamantal
+of which is C<EV_MULTIPLICITY>. This option determines whether (most)
+functions and callbacks have an initial C<struct ev_loop *> argument.
To make it easier to write programs that cope with either variant, the
following macros are defined: