COMMANDS

• C - Change colour to the next one from the cyclic sequence: black, blue, green, cyan, red, magenta, yellow, and white.

• F - Move forward by one cell and paint the new cell.

• R - Rotate clockwise by 45°.

• S - Sleep for 20 ms.

• [ - Begin a repeatable block and continue executing subsequent code normally.

• ] - Go back to the beginning of the current repeatable block, execute it again, and exit the block. Thus a block bounded by ‘[’ and ‘]’ is a loop that runs twice before the block exits.

EXAMPLES

• [FFF] - A column of 6 white cells.

• CC[[[[[[FS]]]]]] - A gradually rising column of 64 cells.

• [[[[[[[[FFF]]R]]][[[SSS]]]CC]]] - An octagon that changes colours 8 times.

MORE

• Project documentation: github.com/susam/cfrs

• Built-in demos: #0, #1, #2, #3, #4, #5

• Community demos: susam.github.io/cfrs/demo.html