Int 15 Fn 7B  - Hunter 16 - Control Hot Key                                [b]

   AH = 7Bh
   AL = 00h prevent HOT key
       else allow HOT key
Desc:  Allow or prevent the HOT key function which is used to examine and
     change the Hunter setup

See Also: AH=71h,AH=7Ah,AH=7Ch