Content providers may specify special formatting instructions to manage formatting of content that is ultimately displayed by electronic devices. The laminated shingle includes an overlay member and an underlay member fixedly attached to each other. The isolation region is formed with a first section having first sidewalls that extend through the intrinsic base and a second section with second sidewalls that extend into the collector region. This is of benefit to both customers and suppliers in that customers can see images from a wide range of sources whilst any single supplier is prevented from dominating the results, and suppliers of reasonably equal ranking get a fair chance of having their images displayed in the results. When the Home Agent determines that an IP address has not previously been assigned to the mobile node, the Home Agent assigns an IP address to the mobile node, composes a registration reply including the IP address and sends the registration reply to the mobile node.