title: Latex: how to break a line inside $$
body: <p>I want to manually break a line inside <code>$$</code>:</p>
  
  <pre><code>$$something something &lt;breakline&gt; something else$$
  </code></pre>
  
  <p>I tried <code>\\</code>, <code>\newline</code>, and <code>\linebreak</code> but none work. Ideas?</p>