Patent ID: 6539387
Filing Date: 2003-03-25
Classification: G06F,Y10S

Abstract:
A hypertexted data structure stored on a computer readable memory device and organized in a hierarchy of at least two levels, the data structure comprising:a plurality of data units positioned at different levels in the hierarchy, each containing at least some textual information; a plurality of hypertext links each linking at least part of the textual information in a given source data unit to a target data unit; wherein: at least one of the hypertext links is linked to at least one hypertext node which contains information relating at least to both the given source data unit and the target data unit; and said information enables a user of a display device connected to a computer reading the memory device to determine the relative positions in the hierarchy of the given source and target data units linked by the hypertext link; and a plurality of hypertext node types each linked to a respective hypertext node, the hypertext node types including at least one of the following node types: (a) a node type linked to each hypertext node determined by the relative positions of the given source data unit and target data unit; (b) a node type linked to each hypertext node determined by the presence of graphics in the given source data unit, in the given target data unit, or in both the given source and target data units; and (c) a node type linked to each hypertext node determined by the presence of a utility application in the given source data unit, in the given target data unit, or in both the given source and target data units.