INT 50 - Vanderaart TEXT WINDOWS - EDIT LINE IN WINDOW                          
	AX = 0006h
	ES:BX -> text string
	CH = type of input (see #03242)
	DH,DL = row,column of upper left corner
	DI = window handle
Return: AX = key which terminated entry
	    0000h Enter
	    0001h Esc
	    0002h Down arrow
	    0003h Up arrow
	    0004h F10


(Table 03242)
Values for type of input to Vanderaart Text Windows:
 00h	everything
 01h	uppercase only
 02h	positive numbers
 03h	Dutch postal code ("9999 AA")
 04h	'J' or 'N' (Dutch yes/no)
 05h	telephone or FAX number
 06h	positive or negative number
 07h	date (dd/mm/yy)
 08h	money
 09h	'1' through '8'
 0Ah	'1' through '4'
 0Bh	uppercase filenames