{
  "tsfVersion": "1.0",
  "name": "cd",
  "summary": "Change the current working directory",
  "symbols": {
    "dir": { "kind": "positional", "type": "directory", "name": "DIR", "summary": "Directory to change into; prints the current directory when omitted" }
  },
  "synopsis": {
    "type": "optional",
    "child": { "type": "reference", "symbol": "dir" }
  }
}