Press A and D to move.
The custom block requires two keystrokes, A and D, for the sprite to move, change its costume, and change its color, then the sprite returns to its original costume and color. The block detects the position of the sprite to make it face to the left or right of the stage, depending on its location. A custom block script is several blocks tall due to its complexity. In contrast, the main stack of has only six blocks, including Hat Block and Forever Loop. The smaller size makes it easier to identify problems in the main block stack, as all script encodings have been moved to the custom block.