Border editing
    In Border Mode,
    select Edit from the
        pulldown displayed at the left bottom of the Toolbar. Border
        editing is only active on surface structures in Montage,
         All,
        or Surface
        views.
        
         
 
      
        - Any Borders to be edited must be displayed. If they are off,
          toggle Display Borders on in the Features
                Toolbox Borders tab and make sure the
          specific borders that will be edited are toggled on in Borders:
            Selection.
        - By default, the Properties
              button is activated. If a displayed border is
            clicked, the Edit Border Properties box will pop up
            and a border's Name, Class, or Point Order can be
            edited.  
 
 
 
      
        -  If the Delete button is
            clicked, each border clicked on in the display will be
            deleted.