I am a dinosaur, and have not used patterns for a bit, but someone must have found a shorter way of explaining something, but neglected to explain it the first time in her pattern.
I agree that the explanations here sound like what you should do, but it is just wrong to drop these things on us! I may not want to try new patterns because I don't like to feel dumb! If you want me to do something that is new, "Splain it to me, Lucy!"