Clarify the RP servers "Don't speak about what you logically don't know" rule?

[aft2001]

While there's a lot of good discussion as to what people *should* do, like Sundance said this isn't what would happen in-game. There 100% needs to be a way to encourage people to RP more and better, but that is far easier said than done.

How can we best get this into the heads of people who are playing on an RP server without being too intrusive and annoying about it?