{
  "version": {
    "_number": "$Revision$"
  },
  "keyword": {
    "t": {
      "x0": {
        "_valueType": "any",
        "_description": "Private use transform type key.",
        "_since": "21.0.2",
        "PRIVATE_USE": {
          "_description": "Private use transform identifier. All subfields consistent with rfc6497 (that is, subtags of 3-8 alphanum characters) are valid, and do not require registration.",
          "_since": "21.0.2"
        }
      }
    }
  }
}