 The picture-framing mat is most commonly known by laymen for its use as additional decoration to enhance the look of a framed piece, sometimes in conjunction with a fillet or more rarely, liners made of wooden moulding with a cloth surface.Although matting usually contains only one opening per layer, it may contain none if a picture is "float-mounted" or "top-mounted" (placed on top of the mat), and mats with two or more exist, more commonly with photography of the family or pictures of individual family members type than other types of artwork.Typically the mat or mats, if matched carefully and properly proportioned, serve to help draw the eye in towards the framed piece, or towards a particular key element of the piece.