{
  "$schema": "https://openpresentation.org/schema/opf-layout/v2",
  "id": "timeline",
  "name": "Timeline",
  "summary": "Dated events or a roadmap along one axis, with optional notes.",
  "tags": [
    "Groups of items"
  ],
  "areas": [
    [
      "title"
    ],
    [
      "timeline"
    ],
    [
      "notes"
    ]
  ],
  "columns": [
    1
  ],
  "rows": [
    "auto",
    1,
    "auto"
  ],
  "regions": {
    "timeline": {
      "accepts": [
        "timeline"
      ],
      "role": "primary",
      "flow": "none"
    },
    "notes": {
      "accepts": [
        "text",
        "list",
        "metric"
      ],
      "role": "supporting",
      "flow": "auto"
    }
  },
  "description": "Show events or milestones in chronological order. Label each item with a date or stage and a concise description.",
  "preview": {
    "vectorSrc": "https://www.pptx.gallery/layout-previews/timeline.svg"
  },
  "x-gallery": {
    "page": "https://www.pptx.gallery/layouts/timeline",
    "label": "Timeline",
    "category": "Groups of items",
    "master": "OPF",
    "masterSlideIndex": 0,
    "groupHash": "timeline",
    "groupDefault": true,
    "zones": [
      {
        "role": "primary",
        "placeholder": "timeline: timeline"
      },
      {
        "role": "supporting",
        "placeholder": "notes: text, list, metric"
      }
    ],
    "spatialCategory": "2 regions",
    "contentTypeTags": [
      "timeline",
      "text",
      "list",
      "metric"
    ]
  }
}