In our Configuration guide, chapter A.22. UNDERTOW SUBSYSTEM ATTRIBUTES, section SERVER ATTRIBUTES, there is a list of links to subsections:

• server
  • http-listener
  • https-listener
  • ajp-listener
  • host
    • access-log (part of settings)
    • single-sign-on (part of settings)
    • filter-ref
    • location
      • filter-ref

This is fine, although at least order of the links in the 'host' subsection does not correspond with actual order of the referenced paragraphs (it goes like 'filter-ref', 'access-log', 'single-sign-on' and 'location'). Please reorder those paragraphs so they correspond with the order in the links list.