I really like this suggestion as often when saving long content like a YouTube video, I’ll only want to create a recall quiz set from some of the content, not all of it. Generating the quiz, and then manually editing out questions, and then generating more questions to try and get it to pick up the questions I am interested in, his time consuming and unreliable. The ability to manually select text and have it generate and add more questions to the set would be brilliant.

This would be especially useful for PDFs, which can be of huge length, but you only want a quiz on say a particular section or sections.