Hi Salvatore,

re:
> I didn't know about the overlap option in acrobat, that's perfect!
>
> About the plugin, I am not sure I understand how it works but if you are
> going to do I will be happy to test it.

If the overlap option in Acrobat Reader does what you need then that should be the easiest way and a plug-in to export multiple PDFs wouldn't be needed.

- Michael