title: Tagging CALayers in iPhone
body: <p>I am looking for a general way to be able to search for a unique CALayer in a hierarchy without having to remember where the layer is in a hierarchy (and use the sublayer: and superlayer: methods). </p>
  
  <p>I know this is possible with UIViews (which makes flipping views easy) but is it possible for CALayer?</p>
  
  <p>thank you in advance for your help</p>
  
  <p>Peyman</p>