1. A computer implemented method for searching, browsing, presenting, and interacting with data assembled from contents of at least one document and related external data, comprising the steps of: for a document aspect comprising a portion of said document's contents in user viewable form, where said portion is all and only those parts of said at least one document that have something semantically useful in common, and for one or more predetermined document aspect types within said at least one document, wherein said document aspect type comprises any of a table of contents, a document index, a subject index, annotations, articles, colophons, copyright information, an enhanced table of contents, a table of illustrations, a list of links, a list of citations, a list of contributors, a list of advertisers, endnotes, glossaries, and a catalog card, performing the following steps: extracting from said at least one document one or more user viewable objects related to said predetermined document aspect type in accordance with said document aspect to yield a document aspect instance; extracting from a related external data source one or more user viewable objects related to said predetermined document aspect type in accordance with said document aspect; and storing said document aspect instance extracted from said at least one document and, said one or more extracted objects from said related external data source, as a user viewable assembled collection in a repository for a subsequent use; when said document aspect instance is accessed, providing said assembled collection to a user.