Question about pdf licence

Hi, I would like to use the following features from this library but I am not sure which licence version I require:
- add annotation bitmap
- generate bitmaps from all document pages
- open/save edited document

Can you inform me regarding this question?
I believe I need the professional version but I am not sure and I need to make a licence purchase

OK, the premium version just has:
--text-field(edit-box in page) and form editing features.
--set meta data, for example: title/subject/author and so on.
others professional version should be OK.

you may test demo project in profession license,
just modify Global.Init()
which invoked activePremium current.
activeProfessional can work too.