{
  "info": {
    "name": "HTML",
    "subsection_number": "9.6",
    "subsection_name": "Broadcasting",
    "url": "https://html.spec.whatwg.org/multipage/comms.html#dom-broadcastchannel-postmessage"
  },
  "features": [
    "BroadcastChannel.prototype.close",
    "BroadcastChannel.prototype.postMessage"
  ]
}