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<snip>
>Before I list some tools allowing to edit a PDF document, I must state
>clearly that the document must not be protected against editing, in order
>to be editable (sounds stupid, but it is possible to protect the document;
>if you run into such a beastie, you will have no chance at all).
</snip>
Sorry if this is old hat, but as long as you can print a PDF and have
Acrobat, you can edit the PDF by printing to a PostScript file and creating
a new PDF. Last time I checked via user forums, there is no way to allow a
PDF to be printed and prevent this workaround. I was frustrated to learn
this, but then it helped when I had to make corrections in a document
supposedly protected against editing.