title: Polymer : Light DOM vs Local DOM
body: <p>What is the difference between Polymer's light DOM and local DOM? 
  From the docs(1):</p>
  
  <blockquote>
    <p>The DOM that an element creates and manages is called its local DOM. 
    This is distinct from the element's children which are sometimes called its light DOM for clarity.</p>
  </blockquote>
  
  <p>This doesn't seem to help much. Isn't the light DOM supposed to contain the children and if so what does the local DOM contain?</p>
  
  <p>[1] <a href="https://www.polymer-project.org/1.0/docs/devguide/local-dom">https://www.polymer-project.org/1.0/docs/devguide/local-dom</a></p>