The Marvel Rating System is a system for rating the content of comic books, with regard to appropriateness for different age groups. In 2001, Marvel Comics withdrew from the Comics Code Authority and established its own rating system for its publications. This was precipitated by the CCA refusing approval of the seal due to the strong depiction of violence in X-Force #116, a comic written by Peter Milligan and drawn by Mike Allred. As well, by withdrawing from the CCA, this is seen as a move by editor-in-chief Joe Quesada to lure more high-profile creators to Marvel Comics. Today's ratings are usually found on the comics UPC box.