His notes which didn't make it into the movie aren't *necessarily* canon, since he could've changes his mind during filming. (We've treated those ones which have appeared in HolQeD as canon, but I think only because HolQeD counts independently as a source of canon.)

Also, the word *{Hovtretlh} which appears in one of the titles is very obviously someone's attempt to write "Star Trek" in "Klingon".

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De'vID