Is there a way of seeing which script accessing each other?

I’ve got a feeling that one of my scripts is modifying variables or using functions in another script; I now want to stop that but I’m afraid I might have lost track and am trying to figure out if there’s a good way of searching for lines used in other scripts. I’ve got one way of doing it, but it would be nice to know if there are easier ways.

In MonoDevelop, if you select a variable or function name you can hit Shift + F12 to show a lost of scripts that reference it as well as what line number the reference is on.