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block action Defines how the geometry of a dynamic block reference will move or change
when the custom properties of a block reference are manipulated in a drawing. A dynamic
block definition usually contains at least one action that is associated with a parameter.
(BACTION)
block authoring object A dimensional constraint, parameter, or action that adds intelligence
to a block definition.
block authoring palettes Tool palettes used in the Block Editor to add actions and parameters
to dynamic block definitions.
block authoring tools Actions, parameters, and parameter sets on the tabs of the Block
Authoring Palettes window. Used in the Block Editor to create dynamic blocks.
block constraint parameter A dimensional constraint that has block authoring information
associated with it.
See also: dynamic constraint
See also: annotational constraint
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 properties table A table that enables users to define different values for a set of
properties for the block definition. Replacement for lookup properties in the future.
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.
bump map A map in which brightness values are translated into apparent changes in the
height of the surface of an object.
button menu The menu for a pointing device with multiple buttons. Each button on the
pointing device (except the pick button) can be defined in the customization file (acad.cui).
BYBLOCK A special object property used to specify that the object inherits the color or
linetype of any block containing it. See also BYLAYER.
2648 | Chapter 52 Glossary