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attenuation The diminishing of light intensity over distance.
attribute definition An object that is included in a block definition to store alphanumeric
data. Attribute values can be predefined or specified when the block is inserted. Attribute
data can be extracted from a drawing and inserted into external files. (ATTDEF)
attribute extraction file A text file to which extracted attribute data is written. The contents
and format are determined by the attribute extraction template file. See also attribute
extraction template file.
attribute extraction template file A text file that determines which attributes are extracted
and how they are formatted when written to an attribute extraction file. See also attribute
extraction file.
attribute prompt The text string displayed when you insert a block with an attribute whose
value is undefined. See also attribute definition, attribute tag, and attribute value.
attribute tag A text string associated with an attribute that identifies a particular attribute
during extraction from the drawing database. See also attribute definition, attribute prompt,
and attribute value.
attribute value The alphanumeric information associated with an attribute tag. See also
attribute definition, attribute prompt, and attribute tag.
AutoCAD for Mac library search path
axis tripod Icon with X, Y, and Z coordinates that is used to visualize the viewpoint (view
direction) of a drawing without displaying the drawing. (VPOINT)
B-spline curve A blended piecewise polynomial curve passing near a given set of control
points. See also Bezier curve. (SPLINE)
back face The opposite side of a front face. Back faces are not visible in a rendered image.
See also front faces.
base point 1. In the context of editing grips, the grip that changes to a solid color when
selected to specify the focus of the subsequent editing operation. 2. A point for relative
distance and angle when copying, moving, and rotating objects. 3. The insertion base point
of the current drawing. (BASE) 4. The insertion base point for a block definition. (BLOCK)
baseline An imaginary line on which text characters appear to rest. Individual characters
can have descenders that drop below the baseline. See also baseline dimension.
baseline dimension Multiple dimensions measured from the same baseline. Also called
parallel dimensions. See also baseline.
basic tooltip Displays a brief description for the tooltip.
1600 | Chapter 51 Glossary