Today I added some basic builtin help functions to Ermacs. As well the as Emacsey C-h k <key sequence> `describe-key', I have a C-h s <key sequence> `find-source', which takes takes you to the source code that's bound to that key. So if you press a key and it doesn't do what you want, you're only about 1sec away from the source code. I think this is a good feature for an under-development editor :-)
Emacs still has the upper hand though, since it takes a bit more than a keystroke to load new definitions into Ermacs, for now..
Welcome back to the "real world", purcell :-)