INT 2F - Ross Wentworth's Turbo Pascal POPUP LIBRARY

	AH = programmer-selected multiplex number
	AL = function
	    00h installation check
		Return: AL = FFh if installed
	    01h get TSR interrupt vectors
		Return: DX:AX -> vector table (see #02587)
	    02h get TSR code segment
		Return: AX = code segment for all interrupt handlers
	    03h call user exit routine and release TSR's memory
	    04h get signature string
		Return: DX:AX -> counted string containing signature
	    05h get TSR's INT 2F handler
		Return: DX:AX -> INT 2F handler
	    06h enable/disable TSR
		BL = new state (00h disabled, 01h enabled)
	    07h activate TSR (popup if not disabled)
	    08h get hotkeys
		BL = which hotkey (00h = hotkey 1, 01h = hotkey 2)
		Return: AX = hotkey (AH = keyflags, AL = scancode)
	    09h set hotkey
		BL = which hotkey (00h = hotkey 1, 01h = hotkey 2)
		CX = new hotkey (CH = keyflags, CL = scancode)
	    0Ah-1Fh reserved
Index:	installation check;Ross Wentworth POPUP library
Index:	hotkeys;Ross Wentworth POPUP library