Hi jkl,
> I would think with a little work you could use ImageMagick to extract
> the margin regions from each page, and check each one for the presence
> of pixels.
One could over-print all the pages onto one page.
man -t bash | pstops 100:0$(printf '+%d' {1..99}) >one.ps
to get a feel of where things can appear.
For me, that shows a `c' appearing above the main block of text due to
the entry after `menu-complete' in `Completing' thanks to a mark-up
error.
$ zcat /usr/share/man/man1/bash.1.gz |
> g -w 'menu.*complete.*backward'
.B menu\-complete-\backward
$
Cheers, Ralph.