Int 31 Fn FF2B  P - Causeway V1.3 - "cwcinfo" - Validate And Get Size Of   [E]

   AX = FF2Bh
   BX = file handle for CWC-compressed file

Return: CF clear if successful
       ECX = expanded file size
   CF set on error (not a CWC-compressed file)

See Also: AX=FF00h,AX=FFFBh