> 506 is for *access* (not use) restrictions, e.g. can
> researchers see the the stuff? do they need a
> donor's or agency's permission to use the stuff?
> 540 is for *use* restrictions for materials to which
> access is provided, e.g. can the user photocopy the
> stuff? quote from/publish it?
Being allowed to show it to your your class or not once you have the
video in your hot little hand as a teacher seems to me to neatly
straddle these two. It is a use restriction on the teacher, and an
access restriction for the students as a group. They have to view it
one by one.