Usage:
    EnumVal <XML file>

This program parses the specified XML file, then shows how to
enumerate the contents of the DTD Grammar. Essentially,
shows how one can access the DTD information stored in internal
data structures.

cd xerces-c-3.3.0/samples/data
EnumVal personal.xml

ELEMENTS:
----------------------------
  Name: personnel
  Content Model: (person)+

  Name: person
  Content Model: (name,email*,url*,link?)
  Attributes:
    Name:id, Type: ID

  Name: name
  Content Model: (#PCDATA|family|given)*

  Name: email
  Content Model: (#PCDATA)*

  Name: url
  Content Model: EMPTY
  Attributes:
    Name:href, Type: CDATA

  Name: link
  Content Model: EMPTY
  Attributes:
    Name:subordinates, Type: IDREF(S)
    Name:manager, Type: IDREF(S)

  Name: family
  Content Model: (#PCDATA)*

  Name: given
  Content Model: (#PCDATA)*