void UpdateSettings()
{
// Courses.
settings.CourseIds = courseSelector.SelectedCourses;
settings.AllCourses = courseSelector.AllCoursesSelected;
settings.VariationChoicesPerCourse = courseSelector.VariationChoicesPerCourse;
// Copies section.
settings.Count = (int) descriptionsUpDown.Value;
// Appearance section
settings.BoxSize = (float) boxSizeUpDown.Value;
}