Hi, Mike.
No, you can't get at the underlying Squeak system from Scratch. If you're interested in doing that you, you could use Squeak's EToys scripting environment. In that environment, you can script with blocks or you can switch to writing scripts in Smalltalk. Squeak is very flexible--but it can also be a bit overwhelming, which is why we decided to take a different approach with Scratch.
-- John
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