Hi,
I just read about Adobe Mars[1] and thought it is interesting for some of the developers here.
[1] http://labs.adobe.com/wiki/index.php/Mars
Here a copy from the homepage:
"Mars is the code name for technology being developed by Adobe that provides an Extensible Markup Language (XML)-based representation of Portable Document Format (PDF) documents. Adobe(R) PDF is a universal file format for representing documents in a manner independent of the application software, hardware, and operating system used to create them and of the output device on which they are to be displayed or printed. XML is a cross-platform, extensible, and text-based standard for representing data that was created so that richly structured documents could be used over the web.
The Mars Project is an XML friendly representation of PDF documents. Already an open specification, PDF is the global standard for trusted, high fidelity electronic documentation. The Mars file format incorporates additional standards such as SVG, PNG, JPG, JPG2000, OpenType, Xpath and XML into a ZIP-based document container. The Mars plug-ins for Acrobat 8 and Adobe Reader 8 enable creation and recognition of the Mars file format by Adobe Acrobat 8 and Adobe Reader 8 software. For additional Mars information see the documents below and check back for regular updates.
The Mars Project is early release software and we welcome your feedback. Please use the feedback link below to request features, make comments and report problems. Please understand that this is an early release and is not yet feature complete. The file format contained within the Mars plug-ins is subject to change and using this technology for production may require you to make significant changes to your documents at a later date. Content created with this release may not be compatible with the shipping version."
Regards, Tobias