About tabbed browsing
With tabbed browsing, you can open multiple web pages on your BlackBerry® device at the same time. You can quickly switch between tabs that are open, open a new tab without closing another, or close the current tab without closing the entire browser. If you open a link that is in a message, calendar entry, or memo, the link automatically opens in a new tab.
The more tabs that you have open, the more memory your device uses.