I cannot agree more with previous posts: please add a real note taking feature to the 600 series.
On the Pocket Book website I read that, thanks to the Active Content
feature "vous lisez désormais le texte en voyant les notes prises"
(litterally, from the French, "you now read the text while seeing your notes". Unfortunately, this is not true, as far as I am aware of. I bought the device and I am really disappointed !
At best, you can add notes and bookmarks to the index of your document. You can create a detailed index, but you cannot annotate your document !
I really hope you can improve this.