Defer updates is typically used for model documentation drawing views of large models, where applying each property change in real time may take time. .
If the button is pressed, Defer Updates is on. If the button is released, Defer Updates is off.
The state of the Defer Updates button is persistent and remembers its status until you change it again. The button state is not limited to the drawing view you edited in the preceding steps. It applies across all drawing views.