<div dir="auto">Consider U+23BE: it is labelled as "Dentistry Symbol Light Vertical and Right".</div><div dir="auto"><br></div><div dir="auto"><div><a href="https://www.compart.com/en/unicode/U+23BE">https://www.compart.com/en/unicode/U+23BE</a></div></div><div dir="auto"><br></div><div dir="auto">Now, I have no idea what these are about; but it is clear that the mystery of the dentistry symbols is not about APL.</div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">philip chastney via Unicode <<a href="mailto:unicode@corp.unicode.org">unicode@corp.unicode.org</a>> schrieb am Fr. 8. Apr. 2022 um 18:26:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:16px"><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"></div>
        <div dir="ltr" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif">the symbols in your message are all APL symbols,</div><div dir="ltr" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif">not dentistry symbols at all</div><div dir="ltr" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><br></div><div dir="ltr" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif">/phil<br></div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><br></div>
        
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                    On Friday, 8 April 2022, 19:39:06 UTC, Jonathan Chan via Unicode <<a href="mailto:unicode@corp.unicode.org" target="_blank" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif">unicode@corp.unicode.org</a>> wrote:
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                <div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><div id="m_-8182650300198602780yiv8455595225" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><div dir="ltr" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif">What are code points U+23BE..U+23CC in Miscellaneous Technical used for?<div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><br></div><div style="margin-left:40px;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><span style="font-family:arial,sans-serif">⎾⎿⏀⏁⏂⏃⏄⏅⏆⏇⏈⏉⏊⏋⏌</span></div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><br></div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif">They're all named <span style="font-family:monospace">DENTISTRY SYMBOL LIGHT</span>..., and the Standard only says they're for dental notation:</div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><br></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;border-left-color:rgb(204,204,204)"><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><b style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><span style="font-family:arial,helvetica,sans-serif"></span>Dental Symbols.</b> The set of symbols from U+23BE to U+23CC form a set of symbols from JIS X 0213 for use in dental notation.</div></blockquote><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><br></div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif">According to Wikipedia the first two and the last two are used in <a rel="nofollow noopener noreferrer" href="https://en.wikipedia.org/wiki/Palmer_notation" target="_blank" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif">Palmer notation</a>, but it doesn't explain what the rest of them are used for. The only historical document I could find with some sort of explanation is <a rel="nofollow noopener noreferrer" href="https://www.unicode.org/L2/L2000/00098-n2195.pdf" target="_blank" style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif">document N2195</a>, but it only explains how they're used and not what they're meant to represent, why they need to exist, or what the circle, triangle, and tilde mean. Based on some cursory searching it doesn't seem like those symbols are standard in modern dental notation either.</div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><br></div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif"><div style="font-family:arial,helvetica,sans-serif"></div></div><div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif">Jonathan</div></div>
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