One place to start could be the debugger. This at least has the advantage of a fixed call stack at any point of inspection rather than a whole cloud of possibil

One place to start could be the debugger. This at least has the advantage of a fixed call stack at any point of inspection rather than a whole cloud of possibilities, making drawing some of those call graphs and flows much easier. I agree, I think it'd be really useful for real work, particularly maintenance work and ramping up on established code bases.