From time to time, notifications will appear in the bottom-right area of your display--when you get a new e-mail message, for example, or when a calendar reminder comes due. You can tap any notification to view more information about it or you can dismiss it altogether.

The area at the bottom left of the screen focuses on navigation. No matter where you are in the system, you'll always see three icons:

Occasionally, you may see a fourth icon in the bottom-left portion of your screen. This icon, which looks like a small grid, appears when you're using a smartphone app that isn't optimized for the Honeycomb interface. Tapping the icon brings up a list of options for the app; it's the equivalent of pressing the Menu key on an Android phone.

When you work with apps that are optimized for Honeycomb, the grid icon is supplanted by what Google likes to call the 'action bar'. The action bar permits apps to use the top-right area of your screen to provide additional options that change, depending on what you're doing. If you're looking at your inbox in Gmail, for example, you'll see an icon for composing a new message. If you're viewing an individual e-mail message, icons for archiving or deleting the message will appear in the same space.