Missing attribute from DTD
<!ELEMENT trust_boundary (description,trust_boundary_environment+)>
<!ATTLIST trust_boundary name CDATA #REQUIRED>
<!ELEMENT trust_boundary_environment (trust_boundary_component+)>
+<!ATTLIST trust_boundary_environment name CDATA #REQUIRED>
<!ELEMENT trust_boundary_component EMPTY>
<!ATTLIST trust_boundary_component name CDATA #REQUIRED>
-
