</h2>
    <p>
      WebPipe.js exposes two methods: <code>webpipe.options()</code> and
      <code>webpipe.execute()</code>.
    </p>
    <p>
      Click run below each example to see the result. Edit the code and test it
      again.
    </p>

    <h3>webpipe.options(url, callback)</h3>
    <p>
      This is a convenience function that returns the JSON descriptor for the
      WebPipe in question.
    </p>
    <pre id="options-input" contenteditable>
var url = "https://webpip.es/calculate-square-root";

we