Abstract: A system and methods to associate information with a file are described. A system including memory, one or more processors, and one or more modules stored in memory and configured for execution by the one or more processors. The system including a unique identifier determination module configured to determine a unique identifier of a file. Further, the system includes an index management module configure to lookup a unique identifier. In addition, the system includes a tag generating configured to generate a tag based on a filename. And, the system includes a tagging module configured to associate the tag with the file.

Abstract: A system to compare and merge a plurality of documents is described. The system includes a data format module configured to determine format of documents and data structures in the documents. The system also includes an abstract description module configured to receive determined data structures and configured to generate a merge case. Further, the system includes a merge module configured to receive determined data structures and configured to generate a merged data structure. And, the system includes a pack module configured to receive the merged data structure and to generate a merged document based on at least said merged data structure.