listen / chatlisten           Listens out for incoming calls
 
   Format:
      ;listen                 Listens for calls on the default port
      ;listen <port>          Listens for calls on <port>
 
   Notes:
      The Chat task is used to chat with other players directly via telnet.
         Calls can be placed (or accepted) with any user whose MUD client uses
         the zChat or MudMaster protocols.
      Use ';chatignore' to block incoming calls.
 
   User commands:
      listen / chatlisten
