Using version 1.8.x and earlier, I could draw the design in my PDF over a transparent background, permitting me to lay it on top of another image.
This was useful in serving the screen print industry. They want to show the design as it will look on the fabric on which they are printing and, though the page / ArtBox is a rectangle, in many cases the design is not. In 2.0, I am finding the page is always opaque white. Can you suggest where I would look for what's causing that? If I can find that, I'll see whether I can set a property, call a method, override a method ... or something. I'll search for it on my own, but the knowledge here among the active developers is often impressive. Thanks!
