On Mon, Sep 7, 2009 at 5:47 PM, Oliver
Buerschaper<oliver.buerscha...@mpq.mpg.de> wrote:
> Dear list,
>
> I'd like to perform some basic PDF editing by hand ... can someone point me
> to a good source of introductory material to get me started?
pdf spec.
www.adobe.com/devnet/acrobat/pdfs/PDF32000_2008.pdf
xpdf sources

>
> For example, I'd like to remove a text stamp from a given file but also
> learn something about PDF itself along the way ... if there's some open
> source editing tool that might help me understand bits and pieces of PDF I
> wouldn't mind either :-)
Under linux pdfedit is experimental
http://pdfedit.petricek.net/en/index.html

pypdf is a python module at lowlevel.
http://pybrary.net/pyPdf/
As exercise, you can try to minimic pdffonts in python with pypdf
(pdfs with ttf,otf,type1 etc )
-- 
luigi
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