<p>Only a limited subset of <span class="math-container">$\LaTeX$</span> is supported on this site, though enough for the vast majority of equations we'd be likely to use. Unicode symbols can still be useful, perhaps especially the more &quot;pictorial&quot; ones. For example, I recently edited <a href="https://stats.stackexchange.com/posts/604266/revisions">a question</a> and in doing so replaced many images by Unicode symbols, e.g. filled and empty circles, and numbers on circular backgrounds.</p>
<p>This certainly made the question easier to edit and annotate, and I hope easier to read. But are there pitfalls I should be aware of if using Unicode in questions and answers? For example, will what I did just be garbled by a screen reader, in which case for accessibility purposes I might have been better to use an image and provide an alt-text? Is Unicode well-supported these days, so if it looks good on my browser I can generally assume it will render okay for other people? Are there particular areas of Unicode we should avoid using?</p>
