--------K-2D--10-----------------------------
INT 2D - ALTMENU - GET POINTER TO KEY CODE
	AL = 10h
	AH = AMIS multiplex number for signature 'Pino Nav' 'ALTMENU '
Return: DX:BX -> key code
Program: ALTMENU allows to activate the menu bar of any program by pressing
	  the Alt key alone.
Notes:	The key code is the word that ALTMENU puts in the keyboard buffer
	  when Alt is pressed alone.  It will be returned in AX by a call
	  to INT 16/AH=00h.
	You can disable ALTMENU by setting key code equal to 0000h.
SeeAlso: INT 16/AH=00h,INT 2D"AMIS"

--------t-2D---------------------------------
INT 2D - ALTERNATE MULTIPLEX INTERRUPT SPECIFICATION (AMIS) [v3.5.1]
	AH = multiplex number
	AL = function
	    00h installation check
		Return: AL = 00h if free
			AL = FFh if multiplex number in use
			    CX = binary version number (CH = major, CL = minor)
			    DX:DI -> signature string (see #1357) identifying
				    the program using the multiplex number
	    [* other functions omitted *]

Notes:	programs should not use fixed multiplex numbers; rather, a program
	  should scan all multiplex numbers from 00h to FFh, remembering the
	  first unused multiplex in case the program is not yet installed.
	  For multiplex numbers which are in use, the program should compare
	  the first 16 bytes of the signature string to determine whether it
	  is already installed on that multiplex number.  If not previously
	  installed, it should use the first free multiplex number.
	functions other than 00h are not valid unless a program is installed
	  on the selected multiplex number

Format of AMIS signature string:
Offset	Size	Description	(Table 1357)
 00h  8 BYTEs	blank-padded manufacturer's name (possibly abbreviated)
 08h  8 BYTEs	blank-padded product name
 10h 64 BYTEs	ASCIZ product description (optional, may be a single 00h)
Note:	it is not necessary to reserve a full 64 bytes for the description,
	  just enough to store the actual ASCIZ string  [* no description in
	  ALTMENU *]
SeeAlso: #1364

(Table 1364)
Values of AMIS signatures known to be in use:
 'Pino Nav' 'ALTMENU '  allows to activate the menu bar of any program by
			  pressing the Alt key alone.
 [* other signatures omitted *]
SeeAlso: #1357