I'm not aware of any pre-existing IBM system file to do what you want, but you can create your own cross-reference by issuing the following command:
DSPPGMREF PGM(*ALLUSR/*ALL) OUTPUT(*OUTFILE) OBJTYPE(*ALL) OUTFILE(MYLIB/MYFILE)
The only limitation on this technique is that it won't find programs that are called as a variable name through another program.
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This was first published in June 2002