RANDOM ACCESS MEMORYAlso called RAM. Retrievable computer
memory accessible at will without sequential reading.
RANGEFINDERThe ground glass in a camera used to focus an image.
RASTER-BASEDAn image based on the manipulation of a matrix of
pixels or dots.
RASTER IMAGE PROCESSORAlso called RIP. A device for
converting vectorbased imagery to highresolution raster images.
READTo access electronically stored data.
REAR PROJECTION SCREENA matte surface, translucent screen used
when projecting an image from behind to a screen.
REBOOTRestart the computer system.
RECEDING COLORSColors that appear to move away or create the
illusion of distance.
RECTANGULAR COORDINATE GRAPHA graph based on a grid
system where values are plotted by X and Y coordinates.
REFERENCE NUMBERSNumbers used on one drawing to refer to
another drawing for further details.
REFERENCE PLANEThe normal plane used to reference all information.
REGISTERTo align a page or any elements of an image or impression to
match the position of successive impressions.
REGISTER MARKSMarks used to key an overlay to a drawing or
mechanical as in color separation or combination plates.
REMOVED SECTIONA drawing of the internal cross section of an object
located near the basic drawing of the object.
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