Course of a teaching request. If a course is marked as exclusive, all assignments of an instructor must have
the same course. It is also possible to mark the course as same common, which require all assignments that are
given to a single instructor to share the same common part of the course (e.g., the lecture).
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 3 of the
License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.