ISOSTS Schematron Checks Business Rules

• Citing Standards <std>
  • standards must be directly inside <ref>, not inside <mixed-citation>
  • each standard reference must contain a <title>
• Checking an ID scheme with Regular Expressions
  • naming schemes not part of a DTD
    not really related to XML at all
  • but they can be checked by Schematron
    (number of parts, length, content, delimiters)