Int 16 Fn ED  - Borland Turbo Lightning - Api                              [U]

   AH = EDh
   BH = EDh
   BL = function
       00h installation check

       Return: AX = 5205h
           CH = major version
           CL = minor version
       01h identical to function 00h???
       02h get resident data segment

       Return: AX = data segment of resident portion
       03h get resident ???

       Return: AX = offset of some buffer in resident code seg
       04h redefine auxiliary dictionary
       DS:SI -> counted filename string

       Return: AL = result code
       05h select active environment
       AL = environment (00h to 0Ch)

       Return: AX = status
               0000h if OK
               0001h if out of range
       06h toggle AutoProof???
       AL = state (00h off, 01h on)
       07h ???
       08h ???
       AL = char???
       CX = ???
       DX = ???

       Return: AX = 0, 1 or 2
       09h ???
       0Ah ???
       CX = ???
       DX = ???

       Return: AX = ???
       0Bh check dictionary integrity???
       DS:SI -> counted dictionary filename string

       Return: AX = 0, 40h, 80h
       0Ch spellcheck string (disk dictionary, possibly RAM dict as well)
       DS:SI -> counted string to check

       Return: AH = 0
           AL = result code
              00h string found in dictionary
              20h string begins more than one word
              40h string not found
       0Dh set ???
       (sets an internal flag)
       0Eh spellcheck string (RAM dictionary only)
       DS:SI -> counted string to check

       Return: AH = 00h
           AL = result code
               00h string found in dictionary
               01h string not found
               02h ???
       0Fh ???
       10h ???

Notes: AX in general returns an error code from most functions.
Index: installation check;Turbo Lightning