    // The default tag for mathfields is <mathlive-mathfield>
      // A custom tag can be defined using:
      // ```Vue.component("custom-tag", Mathfield);```

      new Vue({
        el: "main",
        data: {
          formula: "",
          keystroke: "",
        },
        methods: {
          sayIt: (event) => {
            this.$refs.mathfield.executeCommand(["speak", "all"]);
          },
          setIt: (event) => {
            this.formula = "x=-b\\pm \\frac {\\sqrt{b^2-4ac}}{2a}";
          },