Saves (to browser local storage) are made each time you copy up/down. Max 200. Probably copy/paste elsewhere if it's important.
The page will always load the first level by default. Refreshing on Firefox at least will generally preserve the textarea content. Don't rely on it, though.
Output is below the grid. You might have to scroll down.
There are currently three coding tutorial levels, and a Comprehension Challenge, which is the Real Game.
Probably make sure you "Copy From Memory" before running if you're using the "p" operator (or doing the Comprehension Challenge).
Implements (or tries to implement) Befunge with minor bits from Funge-98.
Bugs are pretty rife. It's a WIP. ChangeLog:
2024-02-03: Click off the grid ends edit mode, skip sleep when terminating/pausing/stepping, fix typo in challenge level, make the highlight appear on the next, not "previous" instruction.