Detecting by Number of Sides If mail pieces in a PDF document have a consistent number of sides, an option to detect by number of sides is available. EXAMPLE: If mail pieces always contain one side, an option for detecting every one side would be configured. Fig. 25 Examples of detecting by number of sides (every 1) To detect mail pieces by number of sides, perform the following actions: 1. Select the Piece has n Sides option. 2. Click inside the associated edit box. 3. Specify the number of sides.