INT 16 U - PCIBM PC Tools v5.1-8.0 DESKTOP - DRAW EMPTY WINDOW
	AX = FFF8h
	DS:0000h -> window parameters structure (see #00622)
	DS:BX -> DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address. to store address of ??? on screen
Return: ???