items:
  - page: <i class="fas fa-bullseye"></i> About
    url: /about/
  - page: <i class="fas fa-download"></i> Installation
    url: /installation/
  - page: <i class="fas fa-vial"></i> Examples
    url: /examples/
    subitems:
      - page: OpenStreetMap
        url: /examples/openstreetmap/
      - page: NaturalEarth
        url: /examples/naturalearth/
      - page: Contour
        url: /examples/contour/
  - page: <i class="fas fa-paint-roller"></i> Stylesheet
    url: /stylesheet/
  - page: <i class="fas fa-map"></i> Demo
    url: /assets/demo.html