Free (as in freedom) pdf editor

[Eric Morey]

On Wed, 2009-05-06 at 21:41 +0100, Graham Todd wrote:
> Is there a .pdf editor that is free (as in freedom, that is, unfettered)
> written specifically for Linux?
> 

I've found the following to be helpful:

pdftk (the PDF Toolkit)
Homepage: http://www.accesspdf.com/pdftk/index.html

Xfig

flpsed

For an explanation on the latter two, see: 
http://www.linux.com/articles/113907