A method and apparatus for facilitating communication about a document between two users creates autonomous, animated computer characters, or avatars, which are then attached to the document under discussion. At least one surface of the cladding material is covered with a carbon material to form a separator for a solid polymer electrolyte fuel cell. In one embodiment, nitrogen is incorporated by annealing the semiconductor device in nitric oxide or nitrous oxide. This is advantageous when heat sealing these polyolefins, for example in the form of single or multilayer films. Addition of these extracted features to the original image results in obtaining an enhanced image. Central office and remote site transceivers employ trellis coded pulse amplitude modulation and a data rate that conforms with the signal transport capability of an extended distance symmetric DSL loop, while providing a 64K POTS channel.