Int 21 Fn DF  - Novell Netware - Print Services - Start Lpt Capture        [N]

   AH = DFh
   DL = 00h

Return: AL = status
       00h successful
Desc:  this function redirects the default LPT to a capture file on the file
     server

Note:  this function is supported by NetWare 4.0+, Advanced NetWare 1.0+, and
     Alloy NTNX; under NTNX, it sends a print break (see INT 17/AH=84h)
   a print job is queued when the first character of output is captured

See Also: AX=B800h,AX=B804h,AH=DFh/DL=01h,AH=DFh/DL=02h,AH=DFh/DL=03h

See Also: AH=DFh/DL=04h,AX=F003h