{
  "mathml": {
    "elements": {
      "munder": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/MathML/Reference/Element/munder",
          "spec_url": "https://w3c.github.io/mathml-core/#underscripts-and-overscripts-munder-mover-munderover",
          "tags": [
            "web-features:mathml"
          ],
          "support": {
            "chrome": {
              "version_added": "109"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "5.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "accentunder": {
          "__compat": {
            "spec_url": "https://w3c.github.io/mathml-core/#dfn-accentunder",
            "tags": [
              "web-features:mathml"
            ],
            "support": {
              "chrome": {
                "version_added": "109"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "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": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}