Prototyping a command-line-style typewriter on web (here).
It may start as a place where you click to start typing, and as it is submitted, a new node may be appended after the latest one. I am not sure whether to add a delete command (as the math goes, when delete and append command exists, a big set of possibilities will be here, but we may also stop thinking before posting).
Starts when the gray bar at the bottom works. Contact via twitter @mediantopology.