{
    "$schema": "http://json-schema.org/draft-07/schema#",
    "type": "object",
    "description": "Index file containing information about the data contained in the dictionary.",
    "required": [
        "title",
        "revision"
    ],
    "properties": {
        "title": {
            "type": "string",
            "description": "Title of the dictionary."
        },
        "revision": {
            "type": "string",
            "description": "Revision of the dictionary. This value is only used for displaying information."
        },
        "sequenced": {
            "type": "boolean",
            "default": false,
            "description": "Whether or not this dictionary can be used as the primary dictionary. Primary dictionaries typically contain term/expression definitions."
        },
        "format": {
            "type": "integer",
            "description": "Format of data found in the JSON data files."
        },
        "version": {
            "type": "integer",
            "description": "Alias for format."
        }
    },
    "anyOf": [
        {
            "required": ["format"]
        },
        {
            "required": ["version"]
        }
    ]
}