How can I modify .xfdl files? (Update #1) | The `.XFDL` file extension identifies `XFDL` Formatted Document files. These belong to the XML-based document and template formatting standard. This format is exactly like the XML file format however, contains a level of encryption for use in secure communications.


I know how to view XFDL files using a file viewer I found [here](http://web.archive.org/web/20170903022252/http://www.e-publishing.af.mil:80/viewerdownload.asp). I can also modify and save these files by doing File:Save/Save As. I'd like, however, to modify these files on the fly. Any suggestions? Is this even possible?


Update #1: I have now successfully decoded and unziped a `.xfdl` into an XML file which I can then edit. Now, I am looking for a way to re-encode the modified XML file back into base64-gzip (using Ruby or the command line)