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As of Milestone 1, the "Individual Grade Summary" screen is the only means of (a) viewing the log of previous grades entered, (b) entering comments for the assignment, and (c) excusing a student from an assignment. Milestone 2 will add this functionality to the multigrade screen, by means of a context menu on right-click.
To provide users with a means of controlling their list of items and categories, there is a "Setup" button at the top of the tool. Clicking on this button will bring up another screen, with three tabs, currently labeled "Gradebook", "Categories" and "Grade Items". The first is for general Gradebook configuration, including whether the grading is done with points or percentages and whether the final course grade should be released to students in their view of the data. The other two tabs offer views of the category and grade item data, respectively, and allow properly authorized users to edit each field.