contains file format information on hundreds of different file types and all sorts of other useful programming information; algorithms, source code, specifications, etc.
is the file extension source. Here you'll find a collection of file extensions; many linked to the programs that created the files. This is the FILExt home page.
previously at http://anubis.dkuug.dk/jtc1/sc22/wg21/ , ISO/IEC JTC1/SC22/WG21 is the international standardization working group for the programming language C++.
these essays are intended for beginners, pointing out useful techniques. Some are for experienced programmers poking into previously unknown areas of MFC. Some are advanced techniques, highly specialized.