Instead of being a fixed part of a drawing, a dynamic block reference can be changed or manipulated as you work in a drawing.
You use the Block Editor to add dynamic behavior to blocks.
You can add geometric constraints and constraint parameters to a dynamic block in the Block Editor.
When an object is fully constrained, all relevant geometric and dimensional constraints are applied to the geometry.
You can add actions and parameters to dynamic blocks to determine how a block should behave when it is inserted into a drawing.
You can convert objects to construction geometry in the Block Editor.
When you create a dynamic block, you can specify custom properties for the block. You can also specify whether or not these properties appear in the Properties palette when you select the block reference in a drawing.