Logic Pro X Easy way to make duplicate track with content

I just discovered this by accident so most likely this is common knowledge: If you option drag in the track header (not the actual region) you can make a duplicate of the track AND it's contents! I don't think there's a key command for this (only the duplicate track key command, which doesn't duplicate the contents). Anyway, news to me.
Wow! That's great! It looks consistent with the Option-drag procedure in Logic... I am eager to test that one when I get to the studio!