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.
Leonard
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