 0.8em high, 1em wide, and aligned so
             that its bottom is flush with the baseline.

  ' ' U+0020 A transparent space exactly 1em high and wide.

Most other US-ASCII characters in the font have the same glyph as X.</pre>
</blockquote>
</section>

</section>


<section>
<h2>Testing <code>text-combine-upright</code></h2>
<p>The <a href="https://drafts.csswg.org/css-writing-modes/#text-combine-upright"><code>text-combine-upright</code></a> property combines a short run of text horizontally in vertic