Ok, where's the "definitions" section?

Looks like they can just make this up as they go along.

Please see,

Federation of American Scientists. (their blog) for more, as follows:

Criminal Prohibitions on the Publication of Classified Defense Information, September 8, 2011

Protection of Classified Information by Congress: Practices and Proposals, August 31, 2011

The State Secrets Privilege: Preventing the Disclosure of Sensitive National Security Information During Civil Litigation, August 16, 2011

Newly updated CRS reports on other topics include these.

Intelligence Issues for Congress, September 14, 2011

The Palestinians: Background and U.S. Relations, August 30, 2011

U.S. Foreign Aid to the Palestinians, August 29, 2011