This reminded when I had to maintain dozens of old 10,000 lines COBOL programs as a junior programmer. I felt so lost I made a program that would print only the

This reminded when I had to maintain dozens of old 10,000 lines COBOL programs as a junior programmer. I felt so lost I made a program that would print only the names of data structures and functions. Seeing the source resumed in a handful of pages, and being able to highlight and draw on it, helped me a lot. Digital has flexibility, but sometimes paper works best.