When the term "canon" is used in context of a work of fiction, it typically means any work related to the original and created by or accepted by the original creator as an authentic part of the over all story of the fictional universe he created. All this crap about a-canon b-canon c-canon is BS used to legitimize the fact that ol' boy George wants to pull in more dough by accepting royalties from the selling of liscened SW novels, but also doesn't want to be confined by rules or events related to those novels. Which is fine, but why not disregard them as canon altogether, instead of this "different levels of canon" stuff. Canon is suppose to be what is offically accepted, it either is or is not.

That said, when we talk about real canon, it is what Lucas and official sources make it out to be. Sure, I mentioned my personal canon, but that is just a fancy way of saying the works I wish to accept as having happened in my own personal experience of the franchise. When we start changing the meanings of words, such as "canon" to mean what is most plausable or what makes the most sense, or what was set out first, we muddle the meaning to the point where it is no longer a useful word.