[gandalfgeek]

Well, https://youtu.be/Bdoi7BDhrWc explains that with a demo.

But tl;dr-- after a segment I want to keep, I switch my background to solid green; after a segment I want to drop, solid red. (Segment == clip between two solid red or green backgrounds)

[jacobmischka]

That's a really interesting and clever idea, well done.