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One can observe the following problems when generating or viewing plain
text versions of the Guidebook. (There are three; "Guidebook" and
"Guidebook.txt" are identical, and are paginated; "Guidebook.dat" is not
paginated.)
1. The line "(Edited and expanded for NetHack 3.7.0 by Mike Stephenson
and others)" is overset.
2. So are Figures 1 and 2, by one character cell, when rendered with
groff 1.23.0 because of the way it handles boxed tables and those
with vertical rules at table boundaries.
https://git.savannah.gnu.org/cgit/groff.git/commit/?id=8f066786ea3cb5e1dbade1149e7d50ae978da202
3. When viewing the Guidebook in an 80-column terminal, the left and
right margins are asymmetric; you get 10 columns on the left but
only 5 on the right.
So:
* doc/Guidebook.mn: In nroff mode, set page offset to 5n and increase
line and title line lengths by 5n to 70n.
Now, the margins are symmetric, there's ample room for the figures, and
the expansion credit fits.
(One diagnostic remains when formatting with groff 1.23.0.
troff:tmac.n:762: error: cannot load font 'S' for emboldening
This is a groff bug and will be fixed in the next release. The
diagnostic is spurious and can be ignored.
See <https://savannah.gnu.org/bugs/?64866>.)
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