Instead of modifying tmac.n's '.ux' macro, replace usage of it with
clone '.UX' (inline in Guidebook.mn in order to avoid modifying tmac.n
according to the author's wishes). '.ux' was used in several places
and neglected in a few others. Now all "UNIX" references use '.UX'
(unless I missed some...). Only the first generates a trademark
footnote. Also only the first adds the (r) superscript for registered
trademark; it would be better if that macro always showed (r) while
continued to show the footnote only once.
I made the mistake of making a bunch of small revisions all at once
and am not going to try to separate them out for separate commit.
I'm not sure they all got reviewed closely; I didn't spot any glaring
errors while scrolling through the formatted file.
The table of display symbols wasn't quoting the backslash used for
thrones so that symbol showed erroneously as blank. hbeam, vbeam,
lslant, and rslant (used for zap animations) were mislabeled as
"wall". (drawing.c used to have the same bug but it got fixed about
two years ago. Guidebook.tex still needs to have this fixed.)
In the section 'using a configuration file', the file name ".nethackrc"
ended up as a hyphenated split across two lines. That needs to be
fixed; the presence of a dash makes the spelling of the name become
ambiguous.
Several small tables that use <something><space+dash+space><something>
don't line up their dashes correctly.
I replaced most blank lines and also lines which begin with whitespace.
One notable exception is the sample map excerpt. It seems to format
as intended so I didn't try to tinker with it.
be8313cc5f