Commands and functions > Layer > Lock layer
  
Lock layer
Ribbon:
Tab ATHENA > Group Layer > Lock layer
Menu:
ATHENA > Layer > Lock layer
Toolbar:
ATH Layer > Lock layer
ATHENA Layer > Lock layer
Command input:
ath_lspe
With this routine you can lock a layer for editing by clicking an object on the required layer. Optionally, you can lock all layers except the selected one. You will find further information about locking layers in your AutoCAD documentation.
Input request 
Select object for locking or [All except/?]:
Use the mouse to select an object on the layer to be locked.
You can lock all layers except the selected one with the Option All except.
With the option ? you call the help.
Option All except
Select object:
Use the mouse to select an object possessed by the layer which is not to be locked. All other layers will be locked.
Note 
ATHENA displays the layer name of the selected object in the command line.
You cannot lock the current layer. If you select an object which has the current layer, the following message appears in the command line:
XXX = Current layer. It cannot be blocked!
Use the command Unlock layer to unlock the layer.