Int 16 Fn 3577  U - Textware Twtsr - Api                                   [U]

   AX = 3577h
   CX = function
       00CBh ???

       Return: AX = 0000h
           BX = 0000h
           DX:CX -> ???
       00CCh uninstall

       Return: AX = status
               0000h successful
               FFFDh unable to unload because vectors taken
       00CDh ???

       Return: AX = 0000h
           BX = 0000h
           DX:CX -> ???
       other

       Return: AX = 5345h ('SE')
Program: TWTSR is a TSR which allows the TextWare hypertext browser to be
     popped up via hotkey

See Also: AX=D724h