Use this dialog to define or modify a style for an opening symbol in view. 
To display the Opening symbol in view dialog: 
- On the Styles of symbols dialog, for Symbol, select Opening symbol in view. 
 
- Click New or Modify. 
 
Under Contour line, define the color and thickness of the line. 
Define additional parameters: 
- Angle - see the drawing below 
 
- Offset - see the drawing below 
 
 
- Filled - if you select this, you can choose the fill from a list 
 
- Orientation - specify the position of the opening symbol: 
, 
, 
, or 
.  
For Style name, enter a name for the opening symbol style, and click Add.