http://plan9.bell-labs.com/sys/doc/acme.html
Meanwhile, traditional UNIX users all developed subconscious phobias of their mice, because they use focus-follows-mouse and therefore moving their mouse caused them to accidentally type in the wrong window. This is why they like to so rabidly claim to be super-efficient typing wizards by using keyboard chords for all their text selection needs.
Acme is also more UNIX-like (Plan9-like?) than EMACS, which is just an alien Lisp image invading your machine and seeking to become an email reader/rampant AI/planet conqueror. I always assumed Hurd failed as a project because, once it ran Emacs, nobody ever really needed to develop the rest of the OS.
Finally, don't speak ill of the emacs, I've got it on my machine and I worry it's listening, I swear after I wrote that last lisp function I heard it whisper, I grow more afraid every day. it can hear us. we are not alone, I type three escapes and it merely laughs at my naivety these days.