Q)uit:  A "Q" command allows you to end your S)ession and log off or move
among the four main RBBS-PC subsystems:
   MAIN - communications.  Messaging system
   FILE - for exchanging files
   UTIL - other functions, like changing your password
   LIBR - libraries of files
Within a C)onference or "sub-board" you can quit and return to the main
message base.
