documents:
  doc1:
    docname: doc1
    subtrees: []
    title: null
  doc2:
    docname: doc2
    subtrees: []
    title: null
  doc3:
    docname: doc3
    subtrees:
    - caption: null
      hidden: true
      items:
      - doc4
      - title: null
        url: https://example.com
      maxdepth: -1
      numbered: false
      reversed: false
      titlesonly: true
    title: null
  doc4:
    docname: doc4
    subtrees: []
    title: null
  intro:
    docname: intro
    subtrees:
    - caption: null
      hidden: true
      items:
      - doc1
      - doc2
      - doc3
      maxdepth: -1
      numbered: true
      reversed: false
      titlesonly: true
    title: null
meta:
  regress: intro
root: intro
