Layer Lock

This is used to lock layers by picking an object on that layer. After issuing the command, pick on one object (of any type) on a layer you want to lock. The program will immediately highlight all objects on the chosen layer. Continue to pick one object per layer you wish to lock.

Keyboard Command: LayTblLok

You can exit the command by pressing ^C. To immediately reverse the effects of the command, use the standard AutoCAD Undo. After working with the drawing, if you wish to unlock the set of layers frozen by this command, use the layer unlock (LU) command.