The object becomes read-only and is marked as such by a 
icon in the General status column of the workspace object table.
icon in the General status column of the workspace object table. icon in the General status column of the workspace object table. | If a workspace object you are trying to lock has been modified in a CAD application design session, but not yet saved to the workspace, you receive a warning about the in-session modification and the object is not locked in the session. |