{
  "prefbar:info": {
    "formatversion": 3
  },
  "prefbar:menu:enabled": {
    "items": [
      "prefbar:button:accessibility_blockautorefresh"
    ]
  },
  "prefbar:button:accessibility_blockautorefresh": {
    "type": "check",
    "label": "Auto Refresh",
    "prefstring": "accessibility.blockautorefresh",
    "topref": "!value",
    "frompref": "!value"
  }
}