Change layer visibility by turning layers on or off, freezing or thawing layers, or by isolating specific layers.
Freeze or Thaw Layers
When working with drawings with lots of layers, freezing unneeded layers can speed up display and regeneration. For example, objects on a frozen layer are not considered during a ZOOM EXTENTS.
- Click

- Select the layers you want to freeze or thaw.
- Click the icon in the Freeze column to set the status of the selected layers.
= frozen
= thawed
NOTE:When thawing layers, the drawing is regenerated.