{
  "mathml": {
    "attribute_values": {
      "named_space": {
        "__compat": {
          "description": "Named spaces (e.g. `thinmathspace` to mean 3/18em)",
          "mdn_url": "https://developer.mozilla.org/docs/Web/MathML/Reference/Values",
          "tags": [
            "web-features:mathml"
          ],
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "nonzero_unitless_values": {
        "__compat": {
          "description": "Nonzero unitless values (e.g. 5 to mean 500% the default thickness)",
          "tags": [
            "web-features:mathml"
          ],
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "1",
              "version_removed": "70"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      }
    }
  }
}