I haven't researched the code, but perhaps someone more familiar with this area of FOP can provide a quick answer to the following question:
Is there any way to import either a PDF file or a FOP file as an external graphic into FOP? I'm aware of fox:external-document<http://xmlgraphics.apache.org/fop/1.0/extensions.html#external-document> but that appears (from the documentation) to only work for full page insertion. G.
