The American canon, What is the difference between the open canon and the closed canon?

What i know is that the open canon includes black books and authors but the closed canon does not... so am i right? is that it?

Here you go...

http://findarticles.com/p/articles/mi_m2838/is_n4_v27/ai_15342552

I guess so. Sounds more like the open canon includes a clatch of adjunct professors trying to make a little name for themselves by revising things (yet again), and the closed canon is whatever they didn't like from the past 50 years. Just more opaque jargon from academe.