 must be an OpenType font with required fetures.
</section>


</section>

<section>
<h2>Glyphs</h2>

<p>This section describes requirements for glyphs that the font needs and gives some ideas of glyphs.


<section>
<h3>Glyphs that can be used as an alternative to Ahem glyphs</h3>
<p>In the prior section we demonstrate how we can test <code>text-combine-upright</code> using Ahem. In some cases tests can be written only using Ahem, but there are cases where we need additional glyphs.
<ul>
  <li>A black square