I have been trying to use groff to create the content files for epubs,
and fbreader is refusing to read them. I have tracked down a few bugs
and squashed them, but still nothing seems to work. So on the off
chance that it's groff causing the problem, or my mis-use of groff, the
command line that I am using is:
groff -Txhtml -U -s -ms manual01.ep > epub/OEBPS/Text/manual01.xhtml
where 'manual01.ep' is (obviously) my input file. There are five such
input files, each one written to a similarly-named output file in
epub/OEBPS/Text.
In the event that my bug is in the content.opf or toc.ncx files, I shall
continue to research them. However, I am becoming convinced that it is
not, as the navigation system works fine; it's only the page content
that does not render.
