unbounded design n. A design that has at least one point of non-zero opacity arbitrarily far
from the origin. Drawing an unbounded design affects the entire drawing plane.

unbounded region n. A region that either contains no points or contains points arbitrarily
far apart.

uniform design n. A design that has the same color and opacity at every point in the drawing
plane. Uniform designs are always unbounded, unless they are completely transparent.

unique id n. During incremental redisplay, the unique id is an object used to uniquely identify
a piece of output. The output named by the unique id will often have a cache value
associated with it.

user n. A person who uses an application program that was written using CLIM.

user transformation n. |Fill this in|

view n. 1. |Fill this in|. 2. A Lisp object that represents a view.

viewport n. The portion of the drawing plane of a sheet's medium that is visible on a display
device.

volatile adj. 1. (of an immutable object) Having components that cannot be modified by the
programmer at the protocol level, but which may be modified internally by CLIM. Volatile
objects reflect internal state of CLIM.