convert to new .Dd format;

use a singular here, just to match an earlier reference;

simplify synopsis somewhat, sort options, and sync usage();

Remove hard sentence breaks, and some other cleanup along the way.

always give .Nm macros an argument in SYNOPSIS sections; krw@tcn.net

kill redundant .Nm macro arguments; other misc fixes

sbin/ man page fixes

Attempt at cleanup.

add -p for printing; cleanup error handling

update rcsid

initial import of NetBSD tree