* Set cross reference to "nethack" man page in lowercase, because that's
the name under which it's installed, and POSIX systems are
case-sensitive.
* Refer to the "nethack" command using a man page cross reference only
on its first occurrence.
* Favor bullets over hyphens for itemized list.
* Drop explicit indentation amounts from lists. The man(7) package's
default suffices on all of Solaris 10, DWB 3.3, Plan 9, Heirloom
Doctools, and GNU *roffs, and on mandoc(1).
* Use tagged paragraphs to set synopses of syntax productions used in
the documented file format.
* Drop inset (indentation) of itemized and tagged lists; the bullets
make the structure clear, and (with the foregoing change) this way the
paragraphs align.
G. Branden Robinson
74a3dc9d71