[Yokowa]

The annotated pdf can not be flattened on the dvice, the annotations are saved automatically to the pdf files, and can be saved as an entry in workspace as well. I didnt find any option to export as a sigle flattened pdf. For page turns, its about 15s for ten pages, but varies much for different pdfs. In some rare case, e.g. i have a 3000 page pdf, i takes 7s to turn a page, but it is much faster after the bookmark is removed, about 1s pageturn time. The annotations does not affect the page turn time much, i can not feel the difference. It seems to me that generally the bottleneck is the refresh rate of the screen.