Method of and article for masking

Correction sheet for obliterating graphic symbols or characters on a flat surface so as to enable the making of changes and corrections thereof comprising, in combination, a pellucid carrier sheet, an opaque film masking element of substantial dimensional extent in all directions so that said masking element is capable of obliterating any of a large number of graphic symbols and characters, said masking element comprising a color and texture similar to the color and texture of the flat surface so as to blend therewith and be substantially non-visible after transferral thereto, means for releasably securing said masking element on the rear face of said carrier sheet so as to enable said masking element to be easily visually and manually positioned by manual manipulation of said carrier sheet to overlie and cover the graphic symbol or character to be obliterated and means for adhering said masking element with said flat surface to enable manually induced transfer of said masking element as a coherent unit from said carrier sheet to said flat surface upon the application of pressure to the front surface of said carrier sheet, as by rubbing thereof with a stick-like object, so that said carrier sheet may be removed to leave said masking element permanently adhered on said flat surface, said correction sheet, particularly for obliterating typewritten material as for the correction of such material even after removal from a typewritter, having said masking element generally rectangular and configured to cover at least a generally rectangular area having a width and height equal, respectively, to the width and height allocated to spacing of a single typewritten character, and wherein said masking element is provided with a letter of contrasting color corresponding in shape and color to a typewritten character to enable obliteration of a typewritten error and correction thereof in a single operation even after removal of the material containing the error from a typewritter and without necessitating that the material be reinserted and re-positioned in a typewriter.