SBT ------- PROMPT ------- GETMCR (S)
       |              |
       |              ---- UPCASE
       |
       ---- GETSWT ------- STRLEN
       |              |
       |              ---- PARSE ------- SPACE
       |                            |
       |                            ---- EQUALS
       |                            |
       |                            ---- COLON
       |                            |
       |                            ---- SLASH
       |
       ---- GETLST ------- SPACE
       |              |
       |              ---- SLASH
       |              |
       |              ---- STRLEN
       |
       ---- SPWNFT ------- MCRSPN ------- SPAWN (S)
       |                             |
       |                             ---- WAITFR (S)
       |
       ---- CHGLST
       |
       ---- BLNKFL
       |
       ---- SETBUF
       |
       ---- NETTLK ------- OPNNTW (N)
       |              |
       |              ---- BACC (N)
       |              |
       |              ---- BFMT1 (N)
       |              |
       |              ---- CONNTW (N)
       |              |
       |              ---- SNDNTW (N)
       |              |
       |              ---- RECNTW (N)
       |              |
       |              ---- CLSNTW (N)
       |
       ---- EXST (S)