title: Polyline Rendering
body: <p>I have ItemsControl which is bound and creates multiple Polylines, one for each data item.</p>
  
  <p>Currently I get "stack" like display - First Polyline at the top, below is second, below is third, and so on...</p>
  
  <p>How can I make Polylines appear on the top of each other?</p>