Screen-printing has been around for the longest time. It involves the passing of ink or any other printing medium through a mesh or 'screen' that has been stretched on a frame, and to which a stencil has been applied. The stencil openings determine the image that will thus be imprinted. Almost any material with a regular surface is a candidate for this technique. It is highly suitable for projects involving multiple copies of the same art. Four Color printing, opaque screens and half toned screening are some of the highly applied methods of screen printing.