What is the current Unicode stance on subscripts and superscripts for mathematical use?

Mon Jun 22 16:22:46 CDT 2020

> On 22 Jun 2020, at 20:45, Doug Ewell via Unicode <unicode at unicode.org> wrote:
> 
> Sorry, sent to wrong list.

I use, for text file input (plain UTF-8), Unicode subscript and superscript parentheses as subscript and superscript delimiters, like in 𝑃₍𝑥₎, 𝑨⁽𝒙⁾. It would be nice to have such subscript and superscript delimiters that provide the corresponding rendering in the text editor.