A method and system for providing an interface that allows navigation and
display of a directed graph are provided. The interface provides
visualization of an underlying graph structure comprising a plurality of
hierarchies with shared common nodes, wherein the hierarchies do not
necessarily share the exhaustive child-tree of the common node. The
method provides for the interface to display a focus node, parent nodes
(if any) of the focus node, and in-context children (if any) of the focus
node. In a preferred embodiment, the displays of focus, parent, and
in-context child nodes are textual displays rather than graphical
node-link displays.