Sorry for my English.
I try to say about difficult writing with custom text editor.
It's hard to write, if you used to home/end keys with window environment, and it did't just not working, but scroll page down. (Keys like home/end, don't prevented from standard browser actions).
P.S: Thanks! My problem not technical, i know too lot, but can't restrict my self, and bury under features. It's wonderful, how many peoples can make easy games, and stop. But i want second Factorio in compo... (: