@xenaandzenafromsanbernadin3807

It's a shame the image of the pdf is blurry.  Is there anyway to to make it sharp as the original?

@sdnnvs

In fact, SuperMemo does not work with PDFs. This proposal for PDF screenshots is a workaround.

@estraventhenerd6725

Thanks for the good video, it is so helpful.
这教程视频很有用，谢谢。（应该是SuperMemo official 官方吧？）

@MrLglc

but how would you do active recall with that ?