2004

318 | Chapter 16 Draw Geometric Objects
The illustration shows a typical sequence for creating a block definition.
Nested Blocks
Block references that contain other blocks are known as nested blocks. Using
blocks within blocks can simplify the organization of a complex block
definition.
With nested blocks, you can build a single block out of several components.
For example, you can insert as a block a drawing of a mechanical assembly
that contains a housing, a bracket, and fasteners in which each fastener is a
block composed of a bolt, washer, and nut. The only restriction on nested
blocks is that you cannot insert blocks that reference themselves.
objects in
drawing area
block definition
created from
selected objects
objects
created
insertion point
selected
objects selected block written to
block table