>>But you can't add them afterwards in this way. Also, doing anything about header files at runtime will have absolutely no effect - header files are something that has to be set before compilation.
>
>Correct. But working through a project hook should work as well as programmatically massaging a vcx/scx before compile.

Right - but that's heavy lifting, compared to just setting the _include variable.

Also, there's the need to do something about the .prg files, which still need to be addressed, and code in reports' dataenvironments, and maybe code in the DBC's events... lots of work.