I think it's Unicode superscript characters¹. Does that look like what you've seen? 1: https://en.wikipedia.org/wiki/Unicode_subscripts_and_superscripts https:

I think it's Unicode superscript characters¹. Does that look like what you've seen? 1: https://en.wikipedia.org/wiki/Unicode_subscripts_and_superscripts https://en.wikipedia.org/wiki/Unicode_subscripts_and_supersc...