Int 2A Fn 06  - Netbios, LANtastic - Network Print-stream Control          [N]

   AH = 06h
   AL = 01h set concatenation mode (all printer output put in one job)
        02h set truncation mode (default)
        printer open/close starts new print job
        03h flush printer output and start new print job

Return: CF set on error
       AX = error code
   CF clear if successful

Notes: subfunction 03h is equivalent to Ctrl/Alt/keypad-*
   also supported by LANtastic, NetWare, 10NET, etc.
   LANtastic v4.x no longer supports this call

See Also: INT 21/AX=5D08h,INT 21/AX=5D09h,INT 2F/AX=1125h