I really wish that you explained how to stop the execution. especially when you mentioned the "20 goto 10" example. Also, if possible, please support Ctrl+C to break too (maybe this isn't a good idea because it's used for copy-to-clipboard). I expected the editor works in a standard way (e.g. going back to the end of the previous line by hitting the left arrow at the beginning of a line) but it didn't, so a quick key binding table would be nice. Thanks for sharing!