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Fantastic tool! It helped me locate the function that required a unlicensed toolbox.
There is one thing I've noticed I want to share:
fdep() and the underlaying depfun() does not interprete "constant-conditional" branches, i.e. when you have
it lists both functions. In my case, this led to the case that MATLAB complained about a unlicensed Toolbox - which I did not use. Commenting out Bla() resolved the problem. :)