Cannot implement hats as described in manual

I see a lot of hats with interesting labels/names/whatever in the book:

Hat with clone of
Hat with new object
Hat with commands

And yet I see no way to make these in the actual editor. I see a bunch of imperative hats, but none of these functional ones where it looks like you can paste something into/onto it.

Specific question: how do I put "clone of" on a hat?

where is it mentioned?
image
if you're talking about that, that's a custom block definition. CLONE OF (PARENT) is a custom block.
example:
Space Game script pic

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