2013

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 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 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.