Fill in the Element field with the name of the object
  or objects you want retrieved.

  The object can be an element name, a group name, a
  wildcard expression, or a list of these separated by
  commas.

  By default, CMS retrieves the most recent generation
  on the main line of descent of each element.

  If you want to fetch a specific generation of the
  element, you must specify the generation number in
  the Fetch Generation field.