The presentation of source code is amazing. I wanted such a presentation for a few months, but couldn't imagine it being that easy to read. I really want to see this (the documentation in html form mixed with the original source code) built into IDEs.
Using a shortcut to toggle modes, of course, and not a WYSIWYG editor 100% of the time. (For anyone that might want to implement it.)
Then put a search function that looks for classes in shared libraries and open projects and automatically switch to this mode whenever a read only file is opened.