(pages, all) => base_html.ori({
  indexPage: true
  all: all
  title: 'Hans Fast'
  _body: Tree.indent`
  <h1>Hans Fast</h1>
  ${Origami.mdHtml(_index.md)}
  ${Tree.map(pages, (value, key) => pageSummaries.ori.html(value, key))}
  </body>
`
})