Well today I've been experimenting some more with the blocks to
figure how can I make the turtle rotate fully and creates a round
rainbow then have it clear the colors and rotate again on a blank
background.. And I guess thats what the block labeled clean does.
And to make the turtle rotate fully around I have to connect the
block labeled repeat and adjust the number block to about 360.
Now it looks similar to the picture above.
So it seem that the unit after the right command is degrees, since 360 would make up a full circle. Experiment more with the clean command until you feel confident you know what it does.
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