One's social heritage, or previous life; what one did in the past.
Information relevant to the current situation about past events; history.
The image or color over which a computer's desktop items are shown (e.g. icons or application windows).
A part of the picture that depicts scenery to the rear or behind the main subject; context.
A less important feature of scenery (as opposed to foreground).
A type of activity on a computer that is not normally visible to the user.
Less important or less noticeable in a scene or system.
To put in a position that is not prominent.
To gather and provide background information (on).