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

[Technature]

I've had like my fourth round the other day where someone came up to security to give us contrabrand (a poison bottle this time) followed by the person explaining in detail that it definitely came from a traitor and that they probably ordered more things from their PDA gear, as well as other "It's an antag, I know what it is so my character must too" moments being commonplace.

Perhaps if there was a page on the wiki explaining what is known in terms of antag knowledge, this problem might start going away...