The goals of this architecture include:

* absolutely uncompromised output quality
* speed, memory efficiency, and other related performance goals
* ability to work smoothly with postscript printers, fonts, and other
resources
* a screen display derived from the canvas
* an extension path for a wide variety of unicode scripts
* an extension path for a richer set of graphics operators than postscript
supports, especially transparency
* to make life as easy as possible for application developers