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" It also describes how to make cocktail sandwiches , by taking a full-sized version that is " cut up into smaller pieces " . It also describes how to register values for use in language tags and the creation of user-defined extensions for private interchange . It also describes how the instructional team ( instructor and TAs ) should prepare the server environment , and how to handle grading of student projects . It also describes how edit results are used by the NCDB .