Edit: Sorry, I misunderstood and was confused by the fact you had the page already.
I thought you were inquiring about the guild rules, which are cleary stated in that page.
There are more rules than just that one, so be careful Xanetia...
Most of the others are unwritten laws, common sense etc. In planeshift RP is required, and the GMs will enforce this, also abusive behaviour is not allowed.