Fill in the Classes field with the name of one or more
  classes.  If you do not supply a class name, CMS
  automatically displays all the classes in the library.

  Full or partial wildcards are allowed; for example, you
  could restrict the class view to classes that end with
  the characters _V2 by typing *_V2 in the Classes field.

  You can specify multiple classes by separating each class
  name with a comma.