Closing Tabs
When you no longer need an application page or workspace open, you can close the tab associated with that page or workspace.
To close tabs
To close a single tab that is not the current tab, click 
Close on the tab you want to close.To close a single tab that is not currently visible, open the tab finder by clicking 
and then click 
in the tab finder for the tab you want to close. To close the current tab, you can use either of the above methods, or you click 
Menu on the current tab and select Close. To close all tabs except the current tab, on the current tab click Menu and select Close All Others. 