Mailspring/docs/templates/_function.html

<h4 id={{name}} class="function-name">
  {{name}}(<span class="args">{{#each arguments}}<span class="arg">{{#if isOptional}}[{{/if}}{{name}}{{#if isOptional}}]{{/if}}</span>{{/each}}</span>) <a href="#{{name}}" class="link"></a>
</h4>

<div class="function-description markdown-from-sourecode">
  <p>{{{description}}}</p>
</div>

{{#if arguments.length}}
    <strong>Parameters</strong>
    <table class="arguments">
        <tr>
          <th>Argument</th>
          <th>Description</th>
        </tr>
        {{#each arguments}}
        <tr>
          <td style="width:15%;">
            <em>{{name}}</em>
          </td>
          <td class="markdown-from-sourecode">
            {{#if isOptional}}<span class="optional">Optional</span>{{/if}}
            {{{description}}}
          </td>
        </tr>
        {{/each}}
    </table>
{{/if}}

{{#if returnValues.length}}
    <strong>Returns</strong>
    <table class="arguments">
      <tr>
        <th>Return Values</th>
      </tr>
      {{#each returnValues}}
      <tr><td class="markdown-from-sourecode">{{{description}}}</td></tr>
      {{/each}}
    </table>
{{/if}}