Unicode(*) superscript 💩
Unicode has superscript versions of numerical characters. These are however not always rendered correctly (e.g. they are currently broken on MacOSX and iOS with the default font). The reason is because the superscript character 1-3 are defined in separate code blocks from characters 0, 4-9.
from Pocket https://www.quaxio.com/unicode_superscript.html
via IFTTT
