--input-encoding=utf-8 --output-encoding=utf-8 \
--overlaybullets= \
--theme $(R2BTHEME)
-R2BFILTER := sed '/\\usepackage\[scaled=\.90\]{helvet}/d'
+R2BFILTER := sed '/\\usepackage\[scaled=\.90\]{helvet}/d; \
+ s/\\usepackage\[utf8\]{inputenc}/\\usepackage[utf8x]{inputenc}/'
DOT := dot
DOTFLAGS :=