You can use the arrow keys to move Pico... Don't ask me why though. There is much more info inside!!! ^-^
I made this because a few days ago I myself hadn't a clue how to use these blocks,and couldn't find any project that told me. However, I saw the recently featured firefly project, and curious, looked inside it. Then I realised how the More Block worked. Hope you enjoy!!! Any questions feel free to ask. Thanks! ^-^