I have some questions about DPS and authoring tools.1. What's the difference between Folio and DPS Article ?I think both format have fixed layout. I can't understand difference and merit of DPS Article.I want to know why Folio was go away and change to DPS Article.2. I want to know all publish root from DPS. (ex.App Store for iOS, Google Play for android and ..)I know I can make iOS, Android and windows application for each stores with DPS.If I want to publish for Kindle store, iBooks store, New...