Dedicated to the honor of the Flag of the United States.

When should the flag be flown at home? Where should the flag be placed on stage in relation to a speaker? Should the flag be draped over a podium? How was the US Flag of WWII different from today's flag? What are the words to the second verse of the Star Spangled Banner? What are the only two states to be admitted to the union (thus adding stars to the flag) on the exact same day? What RGB color values should be used when drawing the flag on a computer screen? How should the flag be folded for display?

KnowledgeBook: US Flag answers all these questions and many more.

此版本中的新功能：

- Better option menu items on high-density screens

- Added list of dates when each state was admitted to the Union