* Re-order the list of options in teh DESCRIPTION as per
the SYNOPSIS.
* Move the description of exit conditions from the
DESCRIPTION section to a new DIAGNOSTICS section.
* Typo fix: "effect" -> "affect" when used as a verb.
* Clear the Nm macro as appropriate.
* Typo fix: "consider" -> "considers" for a singular subject.
* Use Nx instead of NetBSD.