It would be very nice to add raw ASCII/UTF art to manpages. That would
make manpages very expressive, as package maintainers will be able to
add ASCII/UTF diagrams and/or art. Imagine your manpage showing you a
colored text chart, logo, and what not. Groff would add \e[0m to
beginning and end of every line, so the styles defined in such raw
input have no interference with surrounding manpage text. This feature
is similar to adding jpeg images to html pages that previously just
displayed text. Perhaps the only requirement from the user would be
that such image fits in a nice rectangular shape, the character height
and width of which is perhaps provided by them.