Macromedia Devnet has a new article on Importing FlashPaper 2 Documents into Macromedia Flash and Using the FlashPaper API, written by Kendall Whitehouse. The Flash Paper API allows you to perform a whole lot of operations on the movie to be printed which otherwise are not avilable using the Flash's inbuild print methods. Apart from this , one can also customize the UI and also add thier own user interface and manipulate the Flash Paper file using the custom UI.

The Devnet article can be found here and the full documentation of the Flash Paper API is available here.