if you only get to use one notecard, I would say just the source information but if you get more than one then do one or two facts or thoughts per notecard:3
The Invention of the printing press in the 15'th century made it possible to mass- produce and circulate a growing volume of reading material. it chaned the way people read, communicated and stored knowledge
The exposition in sonata-allegro form is an optional ending in the tonic key.
