annotate (verb) - to make notes or comments; to supply a literary work with explanatory notes [an-uh-teyt]
BREAKDOWN: A- (to) + NOT- (mark) + -ATE (make or do)
annotated means already provided or published with explanatory notes or comments
annotation is the act of adding commentary or explanations to text
See also: notional
"Synthesize new ideas constantly. Never read passively. Annotate, model, think, and synthesize while you read, even when you're reading what you conceive to be introductory stuff. That way, you will always aim towards understanding things at a resolution fine enough for you to be creative." —Edward Boyden