{
  "css": {
    "properties": {
      "font-feature-settings": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-feature-settings",
          "support": {
            "chrome": [
              {
                "version_added": "48"
              },
              {
                "prefix": "-webkit-",
                "version_added": "16"
              }
            ],
            "chrome_android": {
              "version_added": "48"
            },
            "edge": {
              "version_added": "15"
            },
            "firefox": [
              {
                "version_added": "34",
                "notes": "The <a href='http://mpeg.chiariglione.org/standards/mpeg-4/open-font-format/text-isoiec-cd-14496-22-3rd-edition' >ISO/IEC CD 14496-22 3rd edition</a> suggests using the <code>ssty</code> feature to provide glyph variants more suitable for use in scripts (for example primes used as superscripts). Starting with Firefox 29, this is done automatically by the <a href='https://developer.mozilla.org/docs/Web/MathML'>MathML</a> rendering engine. The ISO/IEC CD 14496-22 3rd edition also suggests applying the <code>dtls</code> feature to letters when placing mathematical accents to get dotless forms (for example dotless i, j with a hat). Starting with Firefox 35, this is done automatically by the MathML rendering engine. You can override the default values determined by the MathML rendering engine with CSS."
              },
              {
                "prefix": "-moz-",
                "version_added": "15",
                "notes": "From Firefox 4 to Firefox 14 (inclusive), Firefox supported an older, slightly different syntax. See <a href='http://hacks.mozilla.org/2010/11/firefox-4-font-feature-support/'>OpenType Font Feature support in Firefox 4</a>."
              }
            ],
            "firefox_android": [
              {
                "version_added": "34",
                "notes": "The <a href='http://mpeg.chiariglione.org/standards/mpeg-4/open-font-format/text-isoiec-cd-14496-22-3rd-edition' >ISO/IEC CD 14496-22 3rd edition</a> suggests using the <code>ssty</code> feature to provide glyph variants more suitable for use in scripts (for example primes used as superscripts). Starting with Firefox 29, this is done automatically by the <a href='https://developer.mozilla.org/docs/Web/MathML'>MathML</a> rendering engine. The ISO/IEC CD 14496-22 3rd edition also suggests applying the <code>dtls</code> feature to letters when placing mathematical accents to get dotless forms (for example dotless i, j with a hat). Starting with Firefox 35, this is done automatically by the MathML rendering engine. You can override the default values determined by the MathML rendering engine with CSS."
              },
              {
                "prefix": "-moz-",
                "version_added": "15",
                "notes": "From Firefox 4 to Firefox 14 (inclusive), Firefox supported an older, slightly different syntax. See <a href='http://hacks.mozilla.org/2010/11/firefox-4-font-feature-support/'>OpenType Font Feature support in Firefox 4</a>."
              }
            ],
            "ie": {
              "version_added": "10"
            },
            "opera": [
              {
                "version_added": "35"
              },
              {
                "prefix": "-webkit-",
                "version_added": "15"
              }
            ],
            "opera_android": [
              {
                "version_added": "35"
              },
              {
                "prefix": "-webkit-",
                "version_added": "14"
              }
            ],
            "safari": [
              {
                "version_added": "9.1"
              },
              {
                "partial_implementation": true,
                "version_added": "4",
                "version_removed": "6"
              }
            ],
            "safari_ios": [
              {
                "version_added": "9.3"
              },
              {
                "partial_implementation": true,
                "version_added": "3.2",
                "version_removed": "6.1"
              }
            ],
            "samsunginternet_android": {
              "version_added": "5.0"
            },
            "webview_android": {
              "version_added": "4.4"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}