XFL file format has been around for some time now, but if your serious about flash website design or exchanging your flash files to work in XML format — and working between applications like InDesign or Dreamweaver. That’s right – this format can help translate into designing and developing/programming HTML5 file formats from Flash animation files. Or for translating After Effects files into flash, you should start at the link below…

http://www.adobe.com/devnet/flash/articles/concept_xfl.html