Solution? But how to use it? (Was: How to overlay figures in Prosper?)

On Fri, 4 Jul 2003, Wojciech Zabolotny wrote:

> [piątek, 4 lipiec 2003], Przemysław Kozankiewicz napisał(a):
> 
> > > Is it possible to embed the big "base figure" only once, and add
> > > only the "overlayed material"?
> > 
> > When you produce a PDF presentation, every overlay in the resulting file 
> > contains all visible elements, so if you embed the big figure once in a 
> > page with overlays, it is embeded independently for each overlay. 
> > Because each overlay produces new pdf page the resulting file is big.
> > The only method of decreasing the size of the file is to decrease the 
> > size of the image or to use some vector files instead of jpegs.
> > 
> AFAIK PDF format allows to reuse the same graphical object many times.
> Does it mean that Prosper does not make use of this functionality?
> Maybe I'm wrong?

In the PDFLaTeX documentation I've found the following:
\subsection{XObject forms}


The next three primitives support a \PDF\ feature called \quote {object
reuse} in \PDFTEX. The idea is first to create a XObject form in \PDF. The
content of this object corresponds to the content of a \TEX\ box, which can
also contain pictures and references to other XObject form objects as well.
After that the XObject form can be used by simply referring to its object
number. This feature can be useful for large documents with a lot of similar
elements, as it can reduce the duplication of identical objects.

It would be PERFECT to use that for implementing overlays containing 
big "base objects" with only small overlayed objects...
But how to use it in prosper?

		Regards,
		Wojtek Zabolotny,
		[email protected]


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