Each element's tag pair is replaced by a set of parentheses. The tag's name is not repeated at the end, it is simply the first symbol in the list. The element's contents follow, which are either elements themselves or strings.
In XML representation, each element's tag pair is exchanged with parentheses. The tag's label is not duplicated at the conclusion, but rather the initial character of the list. The element's content follows, comprising either elements or text strings, as seen in XML documents.