Navigating at the Same Level
Tabs for Navigating Sections

Tabs provide the user with quick access to different sections of content within an app.
Tabs are generally displayed within the header of a pane; actions associated with the content are generally displayed in the content area or within a toolbar in the footer of the pane.
App Examples
- Launcher
View-Switching

Button groups can be used within a header to switch between different views.
View-switching is different from using tabs in that generally the same content is being viewed when switching views, but the presentation of the content is changing.
App Examples
- Calendar: Day, week, or month view
- List of books versus grid of book covers
Pan Canvas

Flick a full-screen object sideways to reveal the next or previous object.
App Examples
- Photos: Moving from photo #1 to #2