GWL-canon or "G-canon" stood for "George Lucas canon": Marked "GWL" after George Lucas (whose middle name is "Walton")[34]. It included Episodes I–VI (the released films at that time), and any statements by George Lucas (including unpublished production notes from him or his production department that are never seen by the public). Elements originating with Lucas in the scripts, filmed deleted scenes, film novelizations, reference books, radio plays, and other primary sources were also G-canon when not in contradiction with the released films.[39] GWL-canon overrode the lower levels of canon when there was a contradiction. In the words of Leland Chee: "George's view of the universe is his view. He's not beholded to what's gone before."[34]
T-canon was Television canon: Referred to the canon level comprising the animated film Star Wars: The Clone Wars and the television series Star Wars: The Clone Wars. Many stories wound up superseding those depicted in continuity canon, and the second Clone Wars animated series and its film also overwrote Genndy Tartakovsky's 2003 Clone Wars animated micro-series.[39]
C-canon was Continuity canon: Consisting of
most of the materials from the Star Wars Expanded Universe including the books, comics, and videogames bearing the label of Star Wars.[39] According to a Wired article, the creation of stories that introduced radical changes in the continuity, like The Force Unleashed video-game which introduced Darth Vader's secret apprentice, required Lucas's approval, and he spent hours explaining to the developers anything he deemed necessary for them to know.[34] Games and RPG sourcebooks were a special case; the stories and general background information were themselves fully C-canon, but the other elements such as character/item statistics and gameplay were, with few exceptions, N-canon.[citation needed]
S-canon was Secondary canon: Covering the same media as C-canon, it was immediately superseded by anything in higher levels of canon in any place where two elements contradicted each other, the non-contradicting elements were still a canon part of the Star Wars universe, this included certain elements of a few N-canon stories.[39] The Star Wars Holiday Special is an example of secondary canon.[34]