Locking is useful when you need to prevent a layer from being moved or transformed unintentionally.

Lock/Unlock To lock a layer:
  1. On the Layers panel, select the layer to be locked.
  2. Do one of the following:
    • Select Lock/Unlock.
    • From the Layer menu, select Lock.

Select Lock/Unlock again, or use the Layer menu's Unlock item, to allow the layer to be editable.

To unlock all layers: