On 16/10/06, Leonard Rosenthol <[EMAIL PROTECTED]> wrote:
> At 7:08 PM +0200 10/16/06, Antoine wrote:
> >I can't remember - are both these invisible to acrobat (no way to
> >access them through the gui)?
>
>         If you want something that is totally invisible to the
> Acrobat GUI - then I would use a custom dictionary in the /Catalog
> with whatever you want it it...
>
>
> >Nothing is invisible to
> >$ vi mypdf.pdf
>
>         Not true, either.
>
>         If you do your own data block, then you can encrypt it,
> filter it, etc. so that it just looks like binary garbage in vi.

Yes true! Invisible no, incomprensible yes!
:-)
Antoine

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