Thank you Fwiffo! I'm only a beginner in Latin, but I can make out some of the meaning. Rules 1 to 12 seem to correspond to the ones in English. Rules 13 seems to simply describe the layout of the muscovites, and I can't understand 14 at all yet, but I have a feeling that, like rule 13, it may have been excluded from the English edition simply because it duplicated information already given.
(kaŝi) Vi povas sendi mesaĝon al viaj amikoj per unu sola klako: aldonu ilin al via amiko-listo kaj poste klaku la etan koverton apud ilia nomo. (pauloaguia) (Montri ĉiujn konsilojn)