Big fingers, small screen

Minor usability issue on an Android device.
Would be nice to have an oops button, if -accidently/touched-slid to wrong tiny keyboard key & reset that step. Grasshopper thinks I’m a dummy, while I first programmed in Fortran IV (just wanted a quick intro to Javascript).
Overall, great implementation and design for beginners. This is a good candidate for a rollout for schools. :+1::+1:
PS Who’s the oldster who named it?