PMB Commands summary: 
   
[B] ----------> to DISCONNECT. Sending the letter B plus a carriage return will
                disconnect you from the PMB. 
[C] ----------> to Enter your CALL-SIGN into the system ONLY if it was not 
                entered automatically. 
[I] ----------> to read INFORMATION file containing information about this  
                station and equipment. 
[L] ----------> to LIST messages on PMB. 
[LM] ---------> to LIST messages addressed to you. 
[R] ----------> to READ a message, Use  <R #>  (# being the message number you
                want to read). 
[S] ----------> to SEND a msg to someone. Use  <S Callsign>  Callsign is the
                callsign of the person you want to send a message to. 
[J] ----------> to SHOW stations the TNC has heard.
[K] ----------> to KILL your message. Use  <K #>   (# being the message number
                you want to kill). 
[T] ----------> to ring bell for SYSOP.