docs/book.json

{
  "title": "CORD Guide",
  "root": ".",
  "structure": {
    "summary": "SUMMARY.md"
  },
  "variables": {
    "branch": "master"
  },
  "plugins": [
    "toggle-chapters",
    "versions-select"
  ],
  "pluginsConfig": {
    "versions": {
      "options": [
        {
          "value": "http://guide.opencord.org",
          "text": "Master"
        },
        {
          "value": "http://guide.opencord.org/cord-4.0",
          "text": "4.0"
        },
        {
          "value": "http://wiki.opencord.org",
          "text": "3.0 and older"
        }
      ]
    }
  }
}