1. A method of displaying data, comprising the steps of: (1) defining a set of documents, each document having a unique identification, the set being defined by selecting at least one starting document, with the set further comprising documents being included based on predetermined relationships to information derived from said at least one starting document; (2) generating a hierarchal tree representation of at least one subset of the set of documents, a subset inclusion and hierarchy thereof being defined by said predetermined relationships between documents within the set; and (3) selectively focusing on a node of said hierarchal tree, to define a graphic display representation of at least a portion thereof to emphasize the selected focus while depicting the hierarchal relationships.