This post: Is it possible to stuff a Bag of Holding inside another Bag of Holding? made me ask, is it ok to ask questions here about specific rules, which are only unclear if you don't own the raw materials?
As the case OP is asking there is an explicit mentioned case in each description of the item I ever read.
So on the one hand asking about rules here just because you don't own the published material regarding it, seems to me like only adding noise, while on the other hand I could imagine that at some point this could even cause legal trouble, couldn't it?
So how to handle this kind of question, and in case some action is required, what is the border between on topic and off topic for that purpose?