Correction paper, or correction film, its plastic based equivalent, is a tab of plastic with one side coated with white correction material. When inserted between the paper and the typebar, and the ribbon select switched to 'stencil', i.e. inking turned off, the impression of the typebar presses the shape of the character into the film, which prints the white correction material onto the paper, hiding the erronous character and preparing the document for the correct character. Plastic covers a range of synthetic or semisynthetic polymerization products. ... Piece of paper Paper is a thin, flat material produced by the compression of fibers (or fibres). ... A typebar is an arm inside a typewriter with a characters on the end of it. ... A document contains information. ...