Changes

The [[Imperium]] measures and records the psionic activity and power level of [[psychic]] individuals through a rating system called '''The Assignment'''{{Fn|1}} or '''Imperial assignment'''.{{Fn|10}} Comprised of a twenty-four point scale, The Assignment simplifies the comparison of psykers to aid Imperial authorities in recognizing possible threats.{{Fn|1}}

Beings which utilize psychic powers, or [[psykers]], exist within many of the races residing within the galaxy. Human psykers, [[Eldar]] [[Warlock]]s and [[Ork]] [[Weirdboyz]] all fall into this category.{{Fn|2}} Beings such as [[Daemons]] of the Warp are made of purely psychic energies.{{Fn|3}} There are races, like the [[Tau]], which are devoid of psykers or psychic powers.{{Fn|4}} There are even beings which could be called anti-psykers, Human [[Blanks|Untouchables]]{{Fn|1}} and [[Necron Pariah]]s.{{Fn|5}} Due to their use in the armies of Man and their relative abundance in the Imperium's enemies, the Imperium has devised a way to classify all psykers it may come across.{{Fn|1}}

The average ''Homo Sapiens Imperial'' is judged to have an Assignment rating of '''Rho''' or '''Pi'''. These individuals cannot consciously or subconsciously draw power from the [[Immaterium]] and are not able to become possessed without outside psychic influence. As the vast majority of Mankind falls into this Assignment level, the common Imperial citizen poses little psychic security threat.{{Fn|1}}