Is there a Call Hierarchy tool for VB5 or VB6

Over 20 years ago when I did DOS business applications using a product called Clipper, I had a tool that I could send my code to and it would catalog and print every procedure and function in the various files in the program and show what other procedures and functions they called and what procedures and functions were called by them.
As I recall, it also printed out the names of public variables and where they were used.

A tool like this would be amazing to have right now as the program has gotten so big and so old I've forgotten what is available in it.

I see that more current versions of Visual Studio have a Call Hierarchy built in.

Thanks