When selected, enables an advanced proximity check so as to ensure that no adjacent X-Hatches with same angle and spacing exists in the view. This is achieved by inverting the angle value (45⁰ or 135⁰) and increasing spacing density.
When not selected, and the Enable check box is checked in, then modification of spacing and angle value of X-hatches is done, without the proximity (adjacency) conflict check of adjacent solid sections.