Sometimes in a group you need to add a large number of courses at a time, and do not wish to manually type in each course.  That's where definitions come in.

Edit or create a new course, then click the [Edit Definition] link to view the definition popup:

The syntax for a definition consists of adding or removing courses like so:

add *.*    (add all courses)
rem BIOL.*     (remove all courses with the subject BIOL)
rem *.3*    (remove courses where the number begins with a 3.  Ex: ART 301, etc)
add C*.*   (add back in all courses that start with the letter 'C')
rem ACCT.2012   (remove the course ACCT 2012)

Notice we place a "." (period) between the subject and course number.  The "*" (asterisk) means "any thing".

Click the "Generate" button to assemble the list of courses.

Note: Instructions are executed in the order you place them.

Ex:

When you are satisfied with your list of courses, click "Save to Group".