1. A computer-implemented method of displaying information about a document that includes a plurality of spatial identifiers each of which identifies a corresponding location within a metric space and at least two of the locations of the spatial identifiers have a geometric relationship to each other, said method comprising: displaying at least a portion of content from the document, wherein the at least one portion of content is a natural language; displaying a map image of a portion of the metric space; displaying a visual indicator at a position on the map image representing the location that corresponds to one of said plurality of spatial identifiers; visually indicating that the location corresponding to the visual indicator has associated data that characterizes the geometric relationship between that location and the location of another spatial identifier in the document, wherein the geometric relationship is determined by a path hierarchy for each location; and visually differentiating, by visually promoting and highlighting differently, the at least two corresponding locations based on attributes that are defined with reference to the document, wherein the locations that are metonymic are given less prominent visual emphasis than other locations.