Thread
Does anyone know what these are for? 
I guess this is what I'm using my 4500th tweet for: corp.unicode.org/pipermail/unicode/2022-April/010100.html
Credits to @niritsch for finding a source with a google search so simple it didn't occur to me ("dentistry symbol triangle circle line"): books.google.ca/books?id=v0PT19rirp8C&pg=PA310&lpg=PA310&dq=dentistry+symbol+triangle+circle+line&sou...
This may have happened in the meantime ionathan.ch/2022/04/07/dentistry-symbols.html
Stay tuned for next time as I hunt down the origins of this funky character ⍼ U+237C RIGHT ANGLE WITH DOWNWARDS ZIGZAG ARROW. No but seriously what is this symbol supposed to represent, who is using this to mean something
ionathan.ch/2022/04/09/angzarr.html
If anyone can hook me up with a copy of ISO/IEC TR 9573-13:1991 lmk
If anyone can hook me up with a copy of ISO/IEC TR 9573-13:1991 lmk
someone else has already been down this rabbit hole...
math.stackexchange.com/q/4424967/759838 here we go
This is the earliest reference to the symbol that I could find, from ISO/IEC TR 9573-13, published in 1991. It's missing from the earlier standard ISO 8879 (Annex D). The trail kind of ends here so I'm not sure how to keep digging 
I'm doing a glyph comparison. This is the most useless thing why am I doing this. Why is this so fun. What do I do with this information 
The character is called right angle with downwards ZIGZAG arrow and I gotta say, Noto Sans (rightmost) really dropped the ball there with what's clearly a WAVY arrow
