Probably not what OP is looking for, but you can <pre> an ASCII diagram. It's my favorite way to add more info to a particularly complex piece of code (parsers,

Probably not what OP is looking for, but you can <pre> an ASCII diagram. It's my favorite way to add more info to a particularly complex piece of code (parsers, state machines, etc.), right there in a comment. You need to update the diagram when shit changes, which is pretty annoying, but all in all it's a fun, quirky way to improve the source code reading experience. http://asciiflow.com/ http://asciiflow.com/