[WT-support] Feature request: $PREVCALL message symbol for RTTY

[Iain MacDonnell - N6ML]

Please add a message symbol like $PREVCALL, which would expand to the 
callsign from the last log entry submitted. This is needed for RTTY when 
running, so one can pick up more than one callsign from a single CQ. See 
the definition of F8 at:

http://www.rttycontesting.com/messages/buffers_arrlru.htm

as an example.

It would be great if this could happen before the ARRL RTTY RoundUp on 
January 6/7.

     ~Iain / N6ML