The background of the button in the applet that represents the current workspace is highlighted. To switch to another workspace, click on the button that represents the new workspace. If you click on a specific window on a workspace button,  switches to the new workspace and gives focus to the window. To return to your original workspace, click on the button that represents the workspace in the .When you switch to a different workspace, the content of the Window List applet changes to reflect the windows that are open in the new workspace.
