<p>The US ASCII control characters have official symbols? <a href="https://en.wikipedia.org/wiki/ASCII#Control_characters" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">en.wikipedia.org/wiki/ASCII#Co</span><span class="invisible">ntrol_characters</span></a></p>