521 cdecl IStream16_Read(ptr ptr long ptr) IStream16_fnRead
#522 cdecl IStream16_Write(ptr ptr long ptr) IStream16_fnWrite
522 stub IStream16_Write
-523 cdecl IStream16_Seek(ptr long long long ptr) IStream16_fnSeek
+523 cdecl IStream16_Seek(ptr double long ptr) IStream16_fnSeek
524 stub IStream16_SetSize
525 stub IStream16_CopyTo
526 stub IStream16_Commit