INT 50 - PCIBM PC Thuis Organizer Shell - PLOT TEXT
	AX = 0002h
	ES:BX -> text string
	DH,DL = row,column of upper left corner
	DI = window handle
Return: AX = status
	    0000h successful (text fits in window)
	    FFFFh error
Program: The PCIBM PC Thuis Organizer Shell was written by John Vanderaart and
	  published in the June/July 1990 issue of PCIBM PC Thuis Power magazine