Example sources in the examples dir

examples/layer-spy.html

@@ -0,0 +1,17 @@
+---
+template: example.html
+title: Layer Spy Example
+shortdesc: View a portion of one layer over another
+docs: >
+  <p>Layer rendering can be manipulated in <code>precompose</code> and <code>postcompose</code> event listeners.
+  These listeners get an event with a reference to the Canvas rendering context.
+  In this example, the <code>precompose</code> listener sets a clipping mask around the most
+  recent mouse position, giving you a spyglass effect for viewing one layer over another.</p>
+  <p>Move around the map to see the effect.  Use the ↑ up and ↓ down arrow keys to adjust the spyglass size.</p>
+tags: "spy, image manipulation"
+---
+<div class="row-fluid">
+  <div class="span12">
+    <div id="map" class="map"></div>
+  </div>
+</div>