What do you put on your flash cards?

in CCNA & CCENT
This may be a silly question but I just finished reading Todd Lamne's book and doing a review. I did take notes for each chapters and just wanted to get an idea what others have put on flash cards.
I'm thinking besides definitions, protocols, and important stuff.
I'm thinking besides definitions, protocols, and important stuff.
Comments
I just opened the cd. Thx!