I should have been clearer in my earlier post , I meant I hadn't noticed the section until your post and a google search returned it .
Still think it is a distinction between wool filled around a wick&coil (Boge), and stuff that feeds the juice to the coil (via a wick).
That could cover the full gamut from gennies , Ithaka , Kayfun .
Alas it is still speculation on my part !
