AutoCAD 2008 User's Guide > Create and Modify Objects > Control the Properties of Objects > Work with Layers > Use Layers to Manage Complexity > 
Use Layers to Manage Complexity
Concept Procedure Quick Reference
 
 
 

To lock or unlock a layer by using the Layers toolbar

  1. On the Layers toolbar, click the Layer Properties Manager control.
  2. In the Layer Properties Manager, click the padlock icon for the layer name that you want to lock or unlock.

    If the padlock is open, the layer is unlocked.

  3. (Optional) Specify the degree of dimming for all locked layers with the LAYLOCKFADECTL system variable.
 Toolbar: Layers 
 Command entry: LAYER, LAYLOCKFADECTL