Suggestion for superscripts

[Hans Åberg]

> On 4 Jun 2021, at 09:45, Daniel Buncic via Unicode <unicode at corp.unicode.org> wrote:
> 
> Am 04.06.2021 um 01:14 schrieb Don Peterson via Unicode:
>> Alas, that's not a solution for environments like a text editor, bash
>> window, terminal, etc.
> 
> Well, an environment where real superscripts can for some reason not be
> implemented could display those “arrow parentheses” as control
> characters.  Something like Pa↑(-1.3)·s⁻² would in fact look better and
> be more unambiguous than Pa**-1.3·s⁻² or Pa^-1.3·s⁻² (where one does not
> really know whether the s⁻² is part of the exponent or not).

For plain text input in a program, I use superscript and subscript parentheses, which look good and are easy to read. For example:
  𝑃₍𝑥₎𝑎⁽(-1.3)·𝑠⁻²⁾

I ditched the arrows approach, which I used first, inspired by programs like TeX, finding the rendering less appealing.