10. The device of claim 1 , in which a flag is issued when at least one aspect of the annotations does not meet the at least one accuracy criterion, and the grade is assigned based on a number of issued flags.
10. The device of claim 1 , in which a flag is issued when at least one aspect of the annotations does not meet the at least one accuracy criterion, and the grade is assigned based on a number of issued flags. 12. The device of claim 10 , in which the at least one accuracy criterion specifies that no event is missing in a series of successive events.