Sometimes referred to as the system tray, Systray, shell notification area, and the taskbar status area. The notification area is a portion of Microsoft Windows that was first introduced with the Windows 95 and found with all later versions of Windows that display programs running in the background. The notification area is located on the right portion of the Taskbar next to the time. In the pictures to the right, are two examples of what the Windows notification area may look like. The top image is what all versions of the Windows notification up to Windows 7 looked like. Windows 7 introduced a new look to the Systray hiding all the icons until the user clicks the small up arrow.
Also see: Operating System definitions