Cannot implement hats as described in manual

[mjl1966]

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?

[coder_07]

@mjl1966

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

where is it mentioned?

if you're talking about that, that's a custom block definition. CLONE OF (PARENT) is a custom block.
example: