2012

Table Of Contents
The only restriction on nested blocks is that you cannot insert blocks that
reference themselves.
You can apply geometric constraints and constraint parameters to nested
objects in blocks. AutoCAD for Mac detects the nested entity or valid constraint
point for the nested entity regardless of the nesting level of the object.
NOTE Constraints can only be applied between nested objects in the block and
objects in the drawing file, not between pairs of nested objects in the block
reference.
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 (page 321)
338 | Chapter 7 Define and Reference Blocks