At my new work I am dealing with a quite big C/C++ project (50k lines in multiple files). I usually "draw" what the code is doing to understand its functioning but this time I am struggling a bit because of the code's size. Is there a technique that you use to such a purpose? The common algorithm notation with 2D shapes is a bit confusing with this size.
Thanks to anyone.
(I appreciate the downvotes if they come with an explanation)