any decent open-source PDF annotation pgms out there?

[NoOp]

On 09/11/2010 08:35 AM, Robert P. J. Day wrote:
> 
>   every so often, i poke around looking for a working program that
> will let me annotate PDF files and have yet to find one.  admittedly,
> i don't know enough about PDF internals to appreciate how difficult
> that is.

PDFedit
http://pdfedit.petricek.net/en/index.html
http://packages.ubuntu.com/lucid/pdfedit

For annotation only, you can try
http://packages.ubuntu.com/lucid/xournal
http://xournal.sourceforge.net/
http://xournal.sourceforge.net/manual.html
http://xournal.sourceforge.net/manual.html#pdfannotate
[Disclaimer - I've not tried pdf annotation with xournal]

>   ideally, i'd like one that's multi-platform so i'm just about to
> look at the sun import pdf extension for open office.  but if anyone
> has a suggestion for one that really and truly works, i'm all ears.

The sun import pdf extension for OOo works well in most cases. However I
have encountered problems when it runs across fonts that OOo tries to
substitute; result is that spaces between words get dropped so you end
up withsentenceslikethisonerunningacrossthepage.

Nice commercial editor:
http://www.qoppa.com/pdfstudio/
w/excellent annotation features.