{
  "params": {
    "colorway": {
      "type": "choice",
      "options": [
        "aluminium",
        "black",
        "retro",
        "scifi"
      ],
      "default": "aluminium",
      "label": "Colourway",
      "describe": "aluminium (classic office whiteboard, silver frame), black (black frame), retro (wooden frame round a green school chalkboard with chalk drawings), scifi (dark smart board in a gunmetal frame whose cyan drawings glow at night)."
    },
    "mount": {
      "type": "choice",
      "options": [
        "mobile",
        "wall"
      ],
      "default": "mobile",
      "label": "Mount",
      "describe": "mobile (on a wheeled stand, the board flips over on side pivots) or wall (the board alone with a wall rail behind; it rests on y = 0, lift it about 0.9 m onto a wall)."
    },
    "content": {
      "type": "choice",
      "options": [
        "diagram",
        "chart",
        "notes",
        "blank"
      ],
      "default": "diagram",
      "label": "Content",
      "describe": "What is drawn on the front: diagram (boxes joined by arrows, scribbled labels), chart (axes, bars and a trend line), notes (a grid of coloured sticky notes), or blank."
    },
    "width": {
      "type": "range",
      "min": 1.2,
      "max": 2.4,
      "step": 0.1,
      "default": 1.8,
      "label": "Width",
      "describe": "Board width in metres; the height is two thirds of it (1.8 gives a 1.8 x 1.2 m board)."
    }
  },
  "presets": {
    "meeting room": {
      "colorway": "aluminium",
      "mount": "mobile",
      "content": "diagram"
    },
    "old classroom": {
      "colorway": "retro",
      "mount": "wall",
      "content": "chart",
      "width": 2.4
    },
    "mission briefing": {
      "colorway": "scifi",
      "mount": "mobile",
      "content": "notes"
    }
  },
  "night": {
    "screen": {
      "zone": "screen",
      "intensity": 1.4,
      "describe": "The sci-fi smart board's drawings glow cyan; other colourways stay dark."
    }
  }
}