It's usefully to included header files into a project for reference. There is no point to include them in an EXE.

>Is it useful or is it useless to include header files, like foxpro.h, in de project file?
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>I assume it is useless and even preferable to exclude them. The size of a prg that uses a header file does not grow with exactly the size of that header file. Suppose it uses foxpro.h. That header file is 40K+. The resulting prg's will not grow with 40K+. If actually none of the defines is used, it will not grow at all.
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>I am searching reassurance here. Have I forgotten something?