I realized I never even quoted a Twetch before. Is this how…

This is a ‘quote’ yes.

Apparently a ‘retwetch’ is going to be a different feature.

I guess quote is like retweet with comment. Interesting also to consider how the money gets disbursed in case of simple retwetch (if a prominent Twetcher gets many likes for a retwetch does part of that go to original Twetcher, for example? )