You should probably do your homework. Leland Chee and George Lucas created a canon system to keep the EU in line with the movies. G-Canon is an official part of the canon system, and I'm hoping Disney adds their own part so that everything can remain organized.
I stand corrected.....and T-canon's and C-Canons. It just sounded so ridiculous and certainaly makes things confusing if you're a continuity hound.