A few years ago, I wrote an esoteric, minimalistic turtle graphics language called CFRS[]: <https://susam.net/cfrs.html>.

This was an exercise in making a turtle graphics language that is as minimal as possible. It is closer to Brainfsck than JavaScript and it is not Turing complete, by design.

To see some demos, go to <https://susam.github.io/cfrs/demo.html>.