ils of compression rules are up to User Agents, when the resulting glyphs from composition differs from each other, the test can only be verified using negative references.
</section>


<section>
<h3>Glyphs to check the optional processing regarding U+6C34</h3>
<p>The last paragraph in <a href="https://drafts.csswg.org/css-writing-modes/#text-combine-compression">9.1.3 Compression Rules</a> says:
<blockquote>
In some fonts, the ideographic glyphs are given a compressed design such that they are 1em wide but