While it seems to be a contradiction, I'll accept that there is no issue in having them.

(BTW-I'm pretty sure this was the same message I got previously and I'm pretty sure it was the same source! )

My bad for expanding that reply to mean that they were NOT considered examples of slabs. I'm just glad that I don't have to go fire-up that old computer! I've been MAC-less for too many years now!!

Jim