1. to build Books Online, just type nmake. This will produce contents.exe, hdxdll.dll and hdxcvt.exe The defaults for the makefile will produce a single byte character (SBCS) .EXE in release mode. You can build debug or multibyte character (MBCS) .EXE by specifying the following options: nmake // builds 32-bit SBCS in release mode (DEFAULT) nmake mbcs= // builds MBCS .EXE in release mode nmake debug= // builds SBCS .EXE in debug mode nmake mbcs= debug= // builds MBCS .EXE in debug mode nmake 16= // builds 16-bit version of contents Note! 16-bit version makefiles are not prepared to handle MBCS yet 2. the source is compatible on both 16-bit and 32-bit platforms. Just build them using 16-bit or 32-bit tools. Known working tools to build 16-bit version is VC++ 1.0 for Windows. Known working tool that builds 32-bit version is Dolphin (VC++ 3.0 for NT) - contact chauv for Dolphin since it's not yet released. History ------- 10/20/93 chauv updated for detail on building 16-bit and 32-bit 10/13/93 chauv created