{
  "info": {
    "id": 57,
    "origId": "Page Visibility (Second Edition)",
    "name": "Page Visibility (Second Edition)",
    "url": "https://www.w3.org/TR/page-visibility/",
    "catId": "presentation"
  },
  "features": [
    "document.mozHidden",
    "document.webkitHidden",
    "document.hidden",
    "document.mozVisibilityState",
    "document.webkitVisibilityState",
    "document.visibilityState"
  ]
}