- Optional: 
        From the  Edit section of the action bar,
            clickElement Lock
           . .
- 
        Select one of the following options:
        | Option | Description | 
|---|
 
            |  | Locks the individual elements that you select. |  
            |  | Locks all the elements in the selected domains. |  
 
           Note:
    		Once an element is locked, you cannot modify it until you unlock it. You
            can unlock elements and domains by selecting the command again and clicking the locked
            elements or domain. 
The selected elements become transparent, and any modifications
      applied to neighboring elements do not impact the locked elements.