Show raw STL data in the modeling window. 
        
        - 
                On the menu bar, click .
            
 
- 
                In the dialog, click Add file.
            
 
- 
                Browse to the desired STL model file and click
                    Open.
                
The file names populate the list in the dialog. The names in the list
                    are selectable. STL models corresponding to the selected names are highlighted
                    in the display
             
- 
                Click Close.