2011

Table Of Contents
When a block definition is redefined, AutoCAD for Mac will re-evaluate the
constraints between geometry in the drawing and the nested geometry in the
block references. The drawing will then be updated appropriately. If a
constraint cannot be resolved as a result of the change to the block definition,
then the constraint is removed and an unresolved constraints message is
displayed at the command line.
See also:
Overview of Blocks on page 405
Quick Reference
BLOCK
Creates a block definition from selected objects.
Create Block Libraries
A block library is a collection of block definitions stored in a single drawing
file. You can use block libraries supplied by Autodesk or other vendors or
create your own.
You can organize a set of related block definitions by creating the blocks in
the same drawing file. Drawing files used this way are called block, or symbol,
libraries. These block definitions can be inserted individually into any drawing
that you are working on. Block library drawings are not different from other
drawing files except in how they are used.
When you use BLOCK to define each block definition in the block library
drawing, you can include a short description of the block.
Optionally, you can also document each block definition by inserting it in
the drawing area of the library drawing. In addition to the block geometry,
you can include text that provides the block name, the date of creation, the
date of the last modification, and any special instructions or conventions.
This creates a visual index of the blocks in the block library drawing.
Create Block Libraries | 419