Problem statement:  understanding and interpretations of document versioning

                    understanding and interpretations of document[s] compression

               Currently there are several file formats that support compression
               say such as .zip , .tar ,.bzip ...etc.

Opportunity: Deriving from the above ...a portable document format that
             can be usable in collabration , communication ...in office automation
             and group-ware solutions ...that supports versioning.

             ex: this is only a indicative or for illustration ...how about if winzip
                 or winrar support versioning of the documents embedded in the compressed
                 file.

             potential solution: Given that every document has ideally a timestamp associated 
                                 (creation,time of download, check-in in case of a versioning control system,
                                  last-updated ...etc), taking the timestamp as one of the attributes that
                                 decide the unique-ness of a file ...viz. ability access or retrive or refer to a
                                 file ...use-case modelling ...criteria from the context of a operating system...
                                 ...thus in or from the context of a GUI based access this fits the criteria aptly,
                                 to make the concept feasible in the context of command line based operations or
                                 access ...auto append (dynamic) of the timestamp to file name should solve the 
                                 problem ...given the context that a timestamp is a attribute of a file ...usage
                                 of regex as also a view of the data on the storage-medium ...also given the providence
                                 of touch in the operating system context ...availability of such a tool ...scope for
                                 use or misuse ...as also in this context ....a potential potent means ...stem the
                                 mis use of touch ...given that duplicates cannot occur

                 in scenarios like ...XML-RSS ...feeds!! ...potential scope for optimization
                 when ...the operating systems support versioning of files embedded in them.

Note: The above problem statement having been encountered in various scenarios
      and detailed in various 'Proof of concepts' as mentioned in 
      'http://uk.geocities.com/ravivenkatus/projects.pdf' ....apply appropriate
      'use-case' modeling, rationalize and arrive at a workable and feasible 
       solution both commercially and techinically viable.