2011

Table Of Contents
A small instructional message that appears over the drawing window and is
specific to the active navigation tool from the SteeringWheels.
toolbar Part of the interface containing icons that represent commands.
tooltip A small box of text that identifies or explains an object or interface
element when the cursor hovers near or over it.
tracking A way to locate a point relative to other points on the drawing.
tracking menu
A cluster of buttons that follows the cursor as you move it over the window.
translucency How light is scattered through an object.
transmittance scale Increases or decreases the amount of energy a transparent
material transmits out to the scene.
transparency A quantity defining how much light is let through an object.
transparent command A command started while another is in progress.
Precede transparent commands with an apostrophe.
two sided material The positive and negative normal of the material will be
considered during the rendering process.
UCS See user coordinate system (UCS).
UCS icon An icon that indicates the orientation of the UCS axes. (UCSICON)
underconstrained geometry Objects with unsolved degrees of freedom are
underconstrained.
underground The XY plane of the user coordinate system when perspective
projection is turned on and when viewed from below ground. The underground
plane displays with a color gradient between the earth horizon (nearest to the
horizon) and the earth azimuth (opposite the horizon). See also ground plane
and sky.
underlay A DWF, or DGN file used to provide visual context in a drawing
file. Underlays cannot be edited, and do not provide the full range of
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