[
  header ["this is a heading" ]
  block [
    para ["but this is not because it spans multiple lines" ]
    figure [
      title ["untitled" ]
      verbatim ["so this^/is^/a pre^/" ]
    ]
    header ["heading" ]
    block [
      para ["text text text text text" ]
    ]
    para ["bla bla" ]
    line ["bla" ]
  ]
  header ["heading" ]
  block [
    line ["bla" ]
  ]
  header ["heading" ]
  block [
    line ["bla" ]
  ]
]