If you right click on a regular variable in BYOB, it allows you to ''edit elements'' which changes scripts in squeak form. If you poke around through the thousands of options, you may find your way to block scripts, such as the ''if touching edge, bounce'' block. If we can decode the squeak blocks, it may give us a better understanding of how to re-create regular scratch blocks in the scratch interface. If anyone has any thought on this topic, post.
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