Int 50 Fn 0007  - PC Thuis Organizer Shell - Do Line                       [l]

   AX = 0007h
   ES:BX -> text string
   CX = string length in bytes (0000h if NUL-terminated)
   DL = FFh to center string, else flush left
   DH = upper left row
   DI = window handle

Return: AX = status
       0000h successful
       FFFFh error
Program: The PC Thuis Organizer Shell was written by John Vanderaart and
     published in the June/July 1990 issue of PC Thuis Power magazine

See Also: AX=0008h