U&lc: abbreviation for upper-
and lowercase.
Unit: in typography, divisions
of the em space, used for fine-tuning the letterspacing
of text type. Different typesetting systems and
desktop publishing software use different unit divisions:
8, 16, 32, and 64 are common. One unit is a thin
space or a hair space.
URL (Uniform Resource Locator):
A unique address that defines where a Web page is
located on the Internet.
Uniform fill: A type of fill used
to apply one solid color to your image. See
also fill.
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