.Xr ct 4
^- This does not work, as "ct" is some *roff command. Work around
it by adding a non-printing char:
.Xr c\&t 4
(for all manpages, just in case and out of laziness)
- align change message
- Most Important: read RCS Id from existing file and write it into the
newly generated file. That way, no update is announced when nothing
was changed. (Before, the RCS ID was reset to "$NetBSD$" which lead to
a changed file, but nothing of interrest changed)