Skipped content of type multipart/alternative-------------- next part -------------- A non-text attachment was scrubbed... Name: Visitor Pattern.zip Type: application/x-zip-compressed Size: 50659 bytes Desc: Visitor Pattern.zip Url : http://list.isis.vanderbilt.edu/pipermail/pdg-group/attachments/20040206/bbef57fd/VisitorPattern-0001.bin