::::::::::::::::::::::::
:: ALTER NOTIFICATION ::
::::::::::::::::::::::::
Syntax: A(LTER) NOT(IFICATION) [<call>]

If you have a club callsign, but do not login very often with this club
callsign into BBS, it makes sense to inform your callsign each time when
the club callsign gets a new mail. Therefore you can use ALTER NOTIFICATION
for this.