2012

You can set the UCS origin and its X, Y, and Z axes to suit your needs. See also
world coordinate system (WCS).
user parameter Named user-defined variable (real number or an expression)
that can be used in expressions for dimensional constraints or other user
parameters.
UVW The material’s coordinate space. Used instead of XYZ because that is
usually reserved for the world coordinate system (WCS). Most material maps
are a 2D plane assigned to a 3D surface. The U, V, and W coordinates parallel
the relative directions of X, Y, and Z coordinates. If you look at a 2D map
image, U is the equivalent of X, and represents the horizontal direction of the
map. V is the equivalent of Y, and represents the vertical direction of the map.
W is the equivalent of Z and represents a direction perpendicular to the UV
plane of the map.
value node A specific type of action node that is used to handle requests for
user input and hold the recorded value that was captured during the recording
of an action macro.
value set In a dynamic block definition, a range or list of values specified for
a linear, polar, XY, or rotation parameter.
vector A mathematical object with precise direction and length but without
specific location.
vertex A location where edges or polyline segments meet.
vertical ribbon The ribbon when it is oriented vertically, usually on the left
or right of the file window.
view A graphical representation of a model from a specific location (viewpoint)
in space. See also viewpoint and viewport. (3DORBIT, VPOINT, DVIEW, VIEW)
view category A named collection of views in a sheet set that is often
organized by function. See also subset.
ViewCube User interface element that displays the current orientation of a
model, and allows you to interactively rotate the current view or restore a
preset view.
viewpoint The location in 3D model space from which you are viewing a
model. See also view and viewport. (3DORBIT, DVIEW, VPOINT)
viewport A bounded area that displays some portion of the model space of a
drawing. The TILEMODE system variable determines the type of viewport
created. 1. When TILEMODE is off (0), viewports are objects that can be moved
and resized on a layout. (MVIEW) 2. When TILEMODE is on (1), the entire
2324 | Glossary