I am still :ablobcatsweatsip: ing on Nostr: Question for you nerds: is there something like a "sketchpad" made for coders where ...

Question for you nerds: is there something like a "sketchpad" made for coders where you can place code snippets on a canvas and then write notes over them with how they connect to eachother or something? I've been doing it with screenshots but file references or raw text would be better.

This is for the purpose of mapping out legacy code that I have to learn. It's the best way to do it that I've come across so far.