US Patent 9367227 Chapter navigation user interface

A user interface for a touch-screen display of an electronic book reader device is described. The user interface facilitates chapter navigation among the various chapters in digital content items, such as electronic books, in response to use input via the touch-screen display. Multiple techniques for navigating chapters include actuating a chapter navigation control, selecting a portion of a progress indicator depicted on the touch-screen display, and detecting patterns of multi-directional strokes made on the touch-screen display.