I was poking through doc-bugs, and looking into PR#1586.
I'm writing one the for sparc (which will close that PR),
but, as you note, the other ports ought to have one too.

Ideally, an mdoc to HTML translator ought to be written
so that the man pages can be on the NetBSD web site;
then the support pages can point directly to the HTML
version of the intro(4) for each port...

	Erik E. Fair	fair@clock.org