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{
  "type": "object",
  "title": "Grouping",
  "required": [
    "series",
    "title"
  ],
  "properties": {
    "end": {
      "type": "integer"
    },
    "date": {
      "type": "string"
    },
    "path": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "scope": {
      "type": "string"
    },
    "start": {
      "type": "integer"
    },
    "title": {
      "type": "string"
    },
    "series": {
      "type": "string",
      "x-ref-type": "Series"
    },
    "children": {
      "type": "integer"
    }
  },
  "description": "A subseries or run between the series and the files, e.g. 'A. General Correspondence, 1911'."
}