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and various calls to WinHelp() have been centralised into a new file winhelp.c, which in turn has been modified to detect a .CHM file as well as .HLP and select between them as appropriate. It explicitly tries to load HHCTRL.OCX and use GetProcAddress, meaning that it _should_ still work correctly on pre-HTML-Help platforms, falling gracefully back to WinHelp, but although I tested this by temporarily renaming my own HHCTRL.OCX I haven't yet been able to test it on a real HTML-Help-free platform. Also in this checkin: a new .but file and docs makefile changes to make it convenient to build the sources for a .CHM. As yet, owing to limitations of Halibut's CHM support, I'm not able to write a .CHM directly, more's the pity. [originally from svn r7000]