[CW] exclamation

[Jude DaShiell]

Maybe what may be useful to do as standard practice for sending is to 
transmit a symbols key the transmitter intends to use in the message 
containing characters other than the alphabet and then transmit their 
message.  If more than a single message happens between two transmitters 
in a single session the symbols key probably ought to go out with the 
first transmissions unless additional symbols would be used in which case 
a repeat of the symbols key with additional symbols would likely help. 
Such a practice may not be best used with dangerous weather or combat 
providing interference.  Documenting symbol keys from transmitters in a 
log for future messaging probably would help too.