2012

Table Of Contents
block
A generic term for one or more objects that are combined to create a single
object. Commonly used for either block definition or block reference. See also
block definition and block reference. (BLOCK)
block definition
The name, base point, and set of objects that are combined and stored in the
symbol table of a drawing. See also block and block reference.
block definition table
The nongraphical data area of a drawing file that stores block definitions. See
also named object.
block instance
See block reference.
block reference
A compound object that is inserted in a drawing and displays the data stored
in a block definition. Also called instance. See also block and block definition.
(INSERT)
bounded area
A closed area that consists of a single object (such as a circle) or of multiple,
coplanar objects that overlap. You can insert hatch fills within bounded areas.
Bounded areas are also used to create 3D objects through extrusion by using
the PRESSPULL command.
B-spline curve
A blended piecewise polynomial curve passing near a given set of control
points. See also Bezier curve. (SPLINE)
bulge magnitude
The amount of curvature where two surfaces meet. This only applies to surfaces
that have G1 or G2 continuity.
bump map
A map in which brightness values are translated into apparent changes in the
height of the surface of an object.
Glossary | 831