MSG allows one to send a message by name or UIC
 Message is delivered upon logon.
 
  MSG<cr>
  NAME>GRANDLE
 
 is equivalent to
 
  MSG<cr>
  NAME><cr>
  UIC>[1,1]
 
 then
 
  MSG>Bob, don't forget allergy shots
  MSG>2:30 OCT. 22
  MSG>^Z  (control z)
  ...MSG  STOP
 
 when Bob logs on he'll see (after usual logon fanfare)
 
 >@LOGIN.CMD
 >PIP TI:=LOGIN.MSG
 
 
 OCT-21-79
 
 Bob don't forget allergy shots
 2:30 OCT. 22
 
 >PIP LOGIN.CMD;*/DE,LOGIN.MSG;*
 >@<EOF>
 >