On May 31, 2007, at 1:19 AM, Bruno Lowagie wrote:
> It is legally impossible for a product other than an Adobe
> product to change a PDF that has the permissions for 'reader
> enabling a PDF' while keeping these permissions intact.
>
I am going to be a bit pedantic and correct some specific things here.
First, the issue isn't legal it is technical. "Reader Enablement"
is an extension to PDF that Adobe has chosen not to publish/
document. In that way, it is no different than the various
extensions created by many of our 3rd parties over the years.
Because it is undocumented and happens to rely on private
information, it can not be duplicated by others.
Second, even Adobe can't modify a file that is Reader Enabled w/o
breaking it. However, two of our products - Acrobat Professional and
LiveCycle Reader Extensions Server CAN remove the old permissions and
then reapply them.
Leonard
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