Glossary, ContinuedO (Continued)OUTPUT— The end product generated by an electronic device, such as acomputer, printer, or copier.OUTPUT DEVICE— An electronic accessory to a computer system thatprovides some type of end product either visually or as a hard copy.OUTLINE— The outside edge of a shape or form.OUTLINE DRAWING— A drawing where lines define the outer limits ofthe forms without the representation of modeling, light, or shadow.OVERHEAD PROJECTION— A projector that uses of a system of mirrorsand a fresnel lens to project a transparent image or object to another surfaceor screen.OVERLAP— To cover a part of one shape or line with another.OVERLAY— A transparent or translucent sheet taped over the original artfor protection or to indicate instructions or corrections.OVERPRINTING— Printing an image over another impression.OZALID MACHINE— An ammonia process printmaking machine thatproduces the same-size copy from transparent or translucent originals.PPAINTING KNIFE— See PALETTE KNIFE. A type of palette knife madefor applying paint to a picture.PALETTE— (1) The surface on which the artist places paint and mixescolors before applying them to canvas or other painting surface; (2) A groupof colors or gray values chosen for use in the same picture.PALETTE KNIFE— A thin, flexible, steel blade set in a wooden or plastichandle available in a variety of shapes used for mixing paints and impastos,applying paint directly to a canvas or to create special textures directly on thesurface of a picture.Continued on next pageAI-42
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