{
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      "accesskey": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/accesskey",
          "support": {
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": true
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": true
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "webview_android": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "autocapitalize": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/autocapitalize",
          "support": {
            "webview_android": {
              "version_added": null
            },
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "qq_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": null
            },
            "uc_android": {
              "version_added": null
            },
            "uc_chinese_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "class": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/class",
          "support": {
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": "32"
            },
            "firefox_android": {
              "version_added": "32"
            },
            "ie": {
              "version_added": true
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "webview_android": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "contextmenu": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/contextmenu",
          "support": {
            "webview_android": {
              "version_added": true,
              "version_removed": "52",
              "flags": [
                {
                  "type": "preference",
                  "name": "Enable experimental Web Platform features"
                }
              ]
            },
            "chrome": [
              {
                "version_added": "52",
                "flags": [
                  {
                    "type": "runtime_flag",
                    "name": "--enable-blink-features",
                    "value_to_set": "ContextMenu"
                  }
                ],
                "notes": "This was removed from the <i>Enable Experimental Web Platform Features</i> due to a <a href='https://crbug.com/412945'>Web compatibility issue</a>. In June 2017, it was removed entirely from the browsers. This is documented in <a href='https://crbug.com/87553'>Chromium bug 87553</a>."
              },
              {
                "version_added": true,
                "version_removed": "52",
                "flags": [
                  {
                    "type": "preference",
                    "name": "Enable experimental Web Platform features"
                  }
                ]
              }
            ],
            "chrome_android": {
              "version_added": true,
              "version_removed": "52",
              "flags": [
                {
                  "type": "preference",
                  "name": "Enable experimental Web Platform features"
                }
              ]
            },
            "edge": {
              "version_added": false
            },
            "edge_mobile": {
              "version_added": false
            },
            "firefox": {
              "version_added": "9"
            },
            "firefox_android": {
              "version_added": "32",
              "version_removed": "56",
              "notes": "Support for the <code>contextmenu</code> attribute has been removed from Firefox for Android (See <a href='https://bugzil.la/1424252'>bug 1424252</a>)."
            },
            "ie": {
              "version_added": false
            },
            "opera": [
              {
                "version_added": "39",
                "flags": [
                  {
                    "type": "runtime_flag",
                    "name": "--enable-blink-features",
                    "value_to_set": "ContextMenu"
                  }
                ],
                "notes": "This was removed from the <i>Enable Experimental Web Platform Features</i> due to a <a href='https://crbug.com/412945'>Web compatibility issue</a>. In June 2017, it was removed entirely from the browsers. This is documented in <a href='https://crbug.com/87553'>Chromium bug 87553</a>."
              },
              {
                "version_added": true,
                "version_removed": "39",
                "flags": [
                  {
                    "type": "preference",
                    "name": "Enable experimental Web Platform features"
                  }
                ]
              }
            ],
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": true
          }
        }
      },
      "data_attributes": {
        "__compat": {
          "description": "<code>data-*</code> attributes",
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/data-*",
          "support": {
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": true
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": true
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "webview_android": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "dir": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/dir",
          "support": {
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": true
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": true
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "webview_android": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "dropzone": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/dropzone",
          "support": {
            "chrome": {
              "version_added": true,
              "prefix": "-webkit-",
              "version_removed": "58"
            },
            "chrome_android": {
              "version_added": true,
              "prefix": "-webkit-",
              "version_removed": "58"
            },
            "edge": {
              "version_added": false
            },
            "edge_mobile": {
              "version_added": false
            },
            "firefox": {
              "version_added": false
            },
            "firefox_android": {
              "version_added": false
            },
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": false
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "webview_android": {
              "version_added": true,
              "prefix": "-webkit-",
              "version_removed": "58"
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "hidden": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/hidden",
          "support": {
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": true
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": "11"
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "webview_android": {
              "version_added": "4"
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "id": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/id",
          "support": {
            "webview_android": {
              "version_added": true
            },
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": [
              {
                "version_added": "32"
              },
              {
                "version_added": true,
                "version_removed": "32",
                "partial_implementation": true,
                "notes": "<code>id</code> is a true global attribute only since Firefox 32."
              }
            ],
            "firefox_android": [
              {
                "version_added": "32"
              },
              {
                "version_added": true,
                "version_removed": "32",
                "partial_implementation": true,
                "notes": "<code>id</code> is a true global attribute only since Firefox 32."
              }
            ],
            "ie": {
              "version_added": true
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "is": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/is",
          "support": {
            "webview_android": {
              "version_added": "67"
            },
            "chrome": {
              "version_added": "67"
            },
            "chrome_android": {
              "version_added": "67"
            },
            "edge": {
              "version_added": false
            },
            "edge_mobile": {
              "version_added": false
            },
            "firefox": [
              {
                "version_added": "59",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.customelements.enabled",
                    "value_to_set": "true"
                  }
                ]
              },
              {
                "version_added": true,
                "version_removed": "59",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.enabled",
                    "value_to_set": "true"
                  },
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.customelements.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "59",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.customelements.enabled",
                    "value_to_set": "true"
                  }
                ]
              },
              {
                "version_added": true,
                "version_removed": "59",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.enabled",
                    "value_to_set": "true"
                  },
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.customelements.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "55"
            },
            "opera_android": {
              "version_added": "55"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "itemid": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/itemid",
          "support": {
            "webview_android": {
              "version_added": true
            },
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": true
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": true
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "itemprop": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/itemprop",
          "support": {
            "webview_android": {
              "version_added": true
            },
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": true
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": true
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "itemref": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/itemref",
          "support": {
            "webview_android": {
              "version_added": true
            },
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": true
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": true
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "itemscope": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/itemscope",
          "support": {
            "webview_android": {
              "version_added": true
            },
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": true
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": true
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "itemtype": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/itemtype",
          "support": {
            "webview_android": {
              "version_added": true
            },
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": true
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": true
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "lang": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/lang",
          "support": {
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": true
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": true
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": true
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "webview_android": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "slot": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Global_attributes/slot",
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": {
              "version_added": "53"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "59",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.shadowdom.enabled",
                    "value_to_set": "true"
                  }
                ]
              },
              {
                "version_added": true,
                "version_removed": "59",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.enabled",
                    "value_to_set": "true"
                  },
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.shadowdom.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "59",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.shadowdom.enabled",
                    "value_to_set": "true"
                  }
                ]
              },
              {
                "version_added": true,
                "version_removed": "59",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.enabled",
                    "value_to_set": "true"
                  },
                  {
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