Anyway, it's the wrong problem. I don't need help understanding x * 3 + y. I need help understanding what these 30kLOC in these 17 files do.
As always.. not the silver bullet, just the perfect tool for a context and use-case only you can decide/suspect/discover =)
Edit: actually looked at the screens. Hmmm seems like a language/programming learner-aid tool mostly. Fair game for dem young'uns I guess!