INT 2F - MS Windows 3 - WIN.COM - SET PROGRAM TO EXECUTE ON EXIT
        AX = 4B20h
Return: AX = 0000h if successful
            DX:CX -> 256-byte buffer for pathname and commandline (see below)
Note:   when the Windows function ExitWindows is called with an exit code of
          44h, WIN.COM executes the program specified in the returned buffer
          and then restarts Windows

Format of buffer:
Offset  Size    Description
 00h 128 BYTEs  ASCIZ pathname of program to execute
 80h 128 BYTEs  commandline for program

.