Rights of Using the Content (the un-lawyerly version)
The content is owned by the non-profit Digital StudyHall Foundation. We'd like to think of the content as air: it's freely accessible by anyone. In general, we place the fewest possible restrictions on usage of the content in the repository: the content is free for all "reasonable" uses, including modifications and commercial uses. It would be nice if you credit the Digital StudyHall. We reserve the right to veto "shady uses." If there's doubt, please email us.