I looked at the title clip editor, and saw that there is now a "Patterns" tab, but like always in kdenlive, there is no documentation or hints, and nothing about it on the entire internet. I can't find videos or text explaining what it is.
I figured out that the "+" button is active if I select a text object in a title, and if I add it, a grey box appears in the "Patterns" list.

But wtf is it? How is it useful?