Learned how to use library items for elements that need to be repeated on many pages within a site (pages 415419)
Created a library item using the Library category of the Assets panel, inserted it on a page with a link to the library item, and inserted it on another page without a link to the library item (pages 415419)
Used the Property inspector to re-create a library item that was missing from the Library panel (pages 420421)
Edited an existing library item from the Library panel and applied the changes to all pages in the site that used that item (pages 421423)
Updated all references to a library item (pages 423425)