1. A method for improving functionality of a binary representation of an XML-based content description, wherein a structure of any instance of an XML document corresponds to a tree-like data structure, comprising a plurality of tree nodes, the method comprising the steps of: providing that each tree node represents an element of the content description and has a structure which is defined in a schema; providing the tree nodes in the binary representation with tree branch codes; providing that the respective tree branch code has a schema branch code; and decoding, via a decoder within a telecommunications device, paths with new elements, whereby the new elements do not conform to a previous schema, by communicating to the decoder one of (a) the tree structure nodes associated for the new elements beforehand, and (b) a completely new schema.