Border drawing
      When Border Mode
      is activated, Draw
      tools are selected by default and displayed at the bottom of the Toolbar. Border
      drawing is currently only active on surface structures in Montage,
       All, or
      Surface
      views. 
    
      - By default, any loaded border files are
          automatically displayed on the surface. To turn borders off
          before drawing a new border, toggle off Display Borders
          in the Features
                Toolbox Borders tab. 
      
      -  Draw by holding down the alt/option
            key and the left mouse button while dragging the mouse.
          Red border points will appear where the border is drawn.
      - Draw a single, continuous line or draw multiple short sections
          or points (all need to be drawn in the same direction). 
      
      - The Undo
            button removes the last section drawn, the Reset
            button erases all the drawing that has not been
            saved/finished.
      - Mouse and key strokes used to draw a new
          border, or erase, extend, or replace a border already drawn
          are available as Tooltips.
      - When done drawing the border, click the Finish
          button and a popup box will appear to save and classify the
          new border in a new or an existing loaded border file.

        
    
    
      - A Name must be created for each
          border (click Add/Edit button), the color may be set with the
          sliders or RGB code, the default is black.
      - A Class for the border may be
          similarly set, otherwise the default is '???'.
      - If you click the Closed Border
          checkbox, the first and last border point will be joined.
      - The finished border will change from red
          to the border color set and the new border file and class will
          show up in the Features Toolbox. The start point and end point
          of the border are marked as green points on the border for
          reference.