>In general, I prefer the Code References option to search within the PJX vs. a single folder, however I have one dilemma. We have a group of PRGs that are for FoxUnit (FXU) tests, and we don't include these in the PJX (to avoid building inappropriate code into the EXE).
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>I thought about adding the PRGs to the PJX, and then marking them as Exclude, but it seems the PM would try to resolve references in those on build, auto-add other unwanted files, etc.
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>Any suggested approach appreciated. I'm trying to stay within the Code References tool, not just use some grep approach.

Have another project containing all of it. Open that when you want to use Code References that way.