The +rp command set is used to facilitate Staff and Players communication on desired roleplay preferences. If a you wish to be involved in Staff approved plots, exposing yourself to the World Of Darkness and all of its peril, set yourself +rp/plot=Yes.
If you wish to put some sort of boundary or caveat with this setting, use the +rp/note=<note> to define this decision further. For instance, if you want to be included in Staff approved plots, but you don't want to be exposed to heavy violence, set yourself +rp/plot=Yes, then +rp/note=No Graphic Violence Scenes Please! The <note> shouldn't be more than a paragraph if possible.
The last two commands concern with allowed other Players reading your +rp/note information, so that Players who wish to do similar types of RP can find each other.