Xournal: how to use for an existing pdf?

Wed Dec 7 01:22:21 UTC 2011

On Tue, Dec 6, 2011 at 7:09 PM, Amedee Van Gasse
<amedee-ubuntu at amedee.be> wrote:

> And that's why I recommended Adobe Acrobat in this particular case.
> Several Adobe employees have confirmed me that they cannot guarantee that
> a PDF file is still readable if it is edited by a program other than an
> Adobe product. I would add to that: any program that doesn't 100% follow
> the published ISO specification but used reverse engineering to edit PDF
> files.

And is Adobe free to use in Ubuntu?