[DUG] printing to layers

[Phil Middlemiss]

Acrobat 6 introduced "layers" into a PDF - which is nice, but from a 
developers point of view, we generally have generic code for printing 
and rely on the print drivers to do the hard work. However, EPS has 
always had layers (AFIK) and so perhaps there is a generic way to 
indicate a new layer that would be ignored by the print driver if not 
supported, but nicely recognised by Adobe's acrobat print driver to 
create a new layer.

I *could* try and wade my way through the mind-numbing Adobe PDF 
specification, but thought it was worth asking here if anyone has done 
this already?

Cheers,
Phil.