@emp217 No clue. I don't know what tutorial you are talking about. With just F and B knots your strings will all move forward or backward. The FB and BF knots keep them in the same lines they are in.
@Traveler: I saw a tutorial on YouTube in which there are only f or b knots. Is there any difference? I can't see any. Maybe with string order at the edge?
Traveler
