Originally Posted By: Russ
I am unfamiliar with the term “bank line”. Is Tarred Nylon Twine considered “bank line? If so, what are the advantages?

That's the stuff. It's tarred which gives it a good level of mildew resistant. It's very strong for the size and takes knots very well (it's just on the edge of feeling 'tacky' from the tar used to treat it). Bank line works extremely well to tie Prussik knots on other kinds of cordage, too.
“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman