1. A method of substantially reducing corner rounding and image shortening in an image printed on a substrate by illuminating a photolithographic mask and projecting light transmitted through said photolithographic mask onto said substrate using an optical projection system, said photolithographic mask having a mask pattern that includes at least one printable feature having at least one corner; said method comprising: incorporating, in said mask pattern, at least one line feature corresponding to said corner of said printable feature, said line feature being in at least close proximity to said corresponding corner of said printable feature and having a line width that is smaller than a minimum resolution of said optical projection system.