fine print

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Print that is in small type.
• noun The portion of a document, especially a contract, that contains qualifications or restrictions, often in small type.
• noun Information containing small details or presented in difficult or obscure wording.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun idiomatic The details, restrictions, terms, or conditions, especially of a contract, often printed in very small type.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the part of a contract that contains reservations and qualifications that are often printed in small type
• noun material printed in small type