Some characters using the
&...; syntax show up in a post, e.g.
&#nbsp; displays as a non-breaking space. Others don't, e.g.
⏻ for the "power button symbol", it just shows up as a square, i.e. ⏻, instead of:
...there are times when it would be great to use the symbol instead of typing "the power button". Per this 2016 article, the symbol is supported in Unicode 9.0. Is the Unicode 9.0 character set something which the Stack Exchange forums can make use of?