For anyone that wants to help decode the pdfloc information: I've written a quick script that will dump this information out to a text file.
Here it is -- just click on the "raw" link to get the file itself. If you put it in the same place as getannotations, etc, from PRSAnnots, it should work. Then mark up a PDF, run the script, and see what you can puzzle out. Post your results here or on
the bug.
Thanks!