ecific 'PIN' layer is used to make pins that are used to interconnect wires and components.
   Different fill styles (or no fill) can be defined for each layer. Rectangles are placed with the 
   <kbd>'r'</kbd> bindkey
  </p>
  <img src="xschem_rectangles.png">
  <h3> POLYGONS </h3>
  <p>
   Polygons are paths that can be drawn on any layer. Placements begins with the <kbd>'p'</kbd> key
   and continues as long as the user clicks points on the drawing area. Placement ends when:</p>
   <ul>
   <li> the last 