type: //rec
optional:
  content: //str
  book:
    type: //rec
    optional:
      encoding: //str
      lang: //str
      pictures: //bool
      datadir:
        type: //arr
        contents: //str
  chords:
    type: //rec
    optional:
      show: //bool
      diagrampage: //bool
      repeatchords: //bool
      lilypond: //bool
      diagramreminder:
        type: //any
        of:
          - type: //str
            value: "none"
          - type: //str
            value: "important"
          - type: //str
            value: "all"
      instruments:
        type: //any
        of:
          - type: //str
            value: "guitar"
          - type: //str
            value: "ukulele"
      notation:
        type: //any
        of:
          - type: //str
            value: "alphascale"
          - type: //str
            value: "solfedge"
  authors:
    _description: "Comment sont analysés les auteurs"
    type: //rec
    optional:
      separators:
        type: //arr
        contents: //str
      ignore:
        type: //arr
        contents: //str
      by:
        type: //arr
        contents: //str
  titles:
    _description: "Comment sont analysés les titres"
    type: //rec
    optional:
      prefix:
        type: //arr
        contents: //str
  template:
    _description: "Des choses spécifiques au template"
    type: //rec
    optional:
      file: //str
      latex:
        type: //rec
        optional:
          classoptions: //str
      color:
        type: //rec
        optional:
          songnumber: //str
          notebg: //str
          indexbg: //str
      titlepage:
        type: //rec
        optional:
          title: //str
          author: //str
          subtitle: //str
          version: //str
          url: //str
          email: //str
          picture: //str
          picturecopyright: //str
          footer: //str