Not only does it lay out the proper heights at which a flag should be raised off the ground based on its dimensions for executive agencies, but it also addresses when a star shall be added to the union of the flag after the admission of a new state into the union (the following fourth of July).
For more information, visit http://www.law.cornell.edu/uscode/html/uscode04/usc_sup_01_4_10_1.html for full text of the Chapter.
