Glossary, Continued
U (Continued)
UPPERCASE— The capital letters of an alphabet.
USER INTERFACE— The visual and physical attributes of a software
program including tools-, text-, and graphics-handling characteristics.
UTILITY PLAN— A floor plan of a structure showing locations of heating,
electrical, plumbing, and other service components.
V
VALUE— The relative lightness and darkness of different areas of the picture
represented in tones, shading, line balance, and layout.
VALUE SCALE— The complete range of values from the lightest to the
darkest.
VAN DYKE— A brownprint negative and sometimes a brownline positive.
VANISHING POINT— The point at which parallel lines receding from the
observer appear to converge in a perspective drawing or photograph.
VARIGRAPH— A lettering device that allows manipulation of letter size,
slant, and shape.
VARNISH— A solution made of a resin in a volatile medium.
VEHICLE— A liquid used as a carrier of pigment in paint.
VECTOR-BASED— Images based on a series of plotted points that define
precise lines and geometric shapes.
VELLUM— A kind of free, translucent paper resembling parchment or onion
skin used for duplicating copies made with a whiteprint machine.
VELOX— A print of a photograph or other continuous-tone copy prescreened
before paste-up or platemaking with line copy eliminating the need for a
composite negative.
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