[aprssig] Message reject behavior

[scott at opentrac.org]

> * Not sure I follow.  If the command fails, then it would
> seem that a :rej packet would be an excellent way to
> inform the user.  The sending software would then
> be able to tell that the command is not working...

You would think so... but Xastir doesn't display any indication of the
rejection.  I think the D7 beeps, but still keep retrying.  Why have 'rej'
at all if the behavior is the same as no response?

Scott
N1VG