None.
I drew the whole script with the pen and motion blocks, then decided to have Pico Demonstrate the script I drew. Nothing fancy, just a LOT of work. Now I added the Scratch "S", and I was going to do "cratch" with it, but it got too tiring. Instead, you can add the "c" by pressing space. If you remix, change "When {Space] pressed" with "When I receive message 3". Feel free to add "ratch"!