due to unconditional use of .ne. groff apparently inserts some virtual trap
at the end of each page, and this was causing the .ne commands to output extra
lines. Solution is to only use them in troff.
Also fix a related bug in .It, where it would insert a page break in the middle
of a sentence.
Remove the end of page trap in nroff mode, as this causes .sp to sometimes eat
the space due to the nearby trap.
Lastly, undue a previous change that broke the formatting of the SYNOPSIS
section, until we determine the right way to fix that.
comparing the input line number. The latter fails with things like:
.Oc Oc
because there is nothing in the diversion when the second Oc is executed,
which caused the command that adds \*(b2 to the output to be eaten.
.Os to NetBSD 1.4 instead of "4.4 BSD"
Note.. many of the undocumented macros in here are broken, like the .Px,
and .As macros. Someone with more clue should fix them.
* Don't print the `et' in an itty bitty point size just because we want
small caps for the rest of `NetBSD'.
* Define an Nx number register so the macro becomes sort-of callable. It
does punctuation wrong, looking at argument count rather than argument
type, so this will need fixing before it is truly `parsed and callable'.
I would have prefered the "Kernel Internals Manual", but some man pages
in the kernel section have names too long to make that possible without
messing up the title lines. (Sigh.) Also designated "KM" to indicate
"NetBSD Kernel Manual" for completeness.
