He was asking specifically about the “piggyback” exception of Exchange Act Rule 15c2-11(f)(3). It has to do with when broker-dealers are allowed, or not allowed, to publish quotes in OTC stocks.
In English, this means that when the SEC suspends a scam POS stock (like this one)the stock isn't going to be quoted for 30 days, and therefore the piggyback exemption is no longer available to broker-dealers.