Int 50 Fn 000D  - PC Thuis Organizer Shell - Edit Line                     [l]

   AX = 000Dh
   ES:BX -> text string
   CL = length
   CH = type
       bit 0: force uppercase
       bit 1: integer
       bit 2: no spaces allowed
       bit 3: no cursor keys
   DH,DL = row,column of upper left corner
   DI = window handle

Return: AX = result code
Program: The PC Thuis Organizer Shell was written by John Vanderaart and
     published in the June/July 1990 issue of PC Thuis Power magazine