Appendix 1-Glossary -Cont.

Illustrator Draftsman 1 & C - Volume 1 Equipment
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Glossary, Continued G (Continued) GRAPHIC INTERFACE— Screen graphics on the computer screen that make the computer easier to use. GRAPHICS PRINTER— A high-resolution printer capable of printing graphic images. GRAPHICS TABLET— An electronic input device that allows the user to draw on the tablet before committing the image to memory. GRAPHITE— The black marking substance in a lead pencil. GRAVER— A needle or square pointed tool used to scratch lines into scratchboard. GRAVURE— A photomechanical printing process (intaglio) with the images recessed below the surface of the plate. GRAY— A color formed by mixing black and white or complementary colors. GRISAILLE— A decorative gray monochromatic painting designed to create the illusion of a bias-relief sculpture. GUM ARABIC— A water soluble gum used as a binder in some watercolors and tempura paints. GUTTER— (1) The inner margin of a printed page extending from the printed portion to the fold or binding; (2) The area between two columns a printed page. on H HALF SECTION— A combination of an orthographic projection and a section view to show two halves of a symmetrical object. HALFTONE— A tonal pattern of shades from white through black defined by a series of dots. Continued on next page AI-29

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