Glossary, ContinuedP (Continued)PROOFREADER’S MARKS— Standard marks placed in the margin nearestthe word that indicate corrections in typeset copy.PROPORTION— The relation to size of one part or thing to another or oneportion of something to the whole.PROPORTIONAL DIVIDERS— A drafting instrument used for transferringmeasurements from one scale to another or to divide lines and circles intoequal parts.PROPORTIONAL SPACING— Also called DIFFERENTIALLETTERSPACING. The spacing of characters in proportion to size bymeans of the typewriters and office composing machines used in thepreparation of cold composition copy.PROPS— Accents or accessories that identify the time frame or location of asubject.PROTRACTOR— A circular or semicircular rule for measuring off thedegree of an angle.QRQUILL PEN— See CROW QUILL. A pen nib made from a feature quill.RADIAL FILL— To fill an object with color, pattern, or shade that appearsto radiate from the center of the object.RADIATION— A divergence of lines, tones, or colors from a common pointto different directions.IUMXUS— A straight line from the center of a circle or sphere to a point onits circumference.RADIUS CURVE— A drawing tool used to draw arcs of a predeterminedradius.Continued on next pageAI-49
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