How to show text as superscript in "Alt text"?

Question

How to show text as superscript in alt text

:

Value ¹⁰

Answer 1

Like knittl and SLaKs, try a unicode character html entity.
http://en.wikipedia.org/wiki/Unicode_subscripts_and_superscripts

¹²³⁴⁵⁶⁷⁸⁹⁰

Result: ¹²³⁴⁵⁶⁷⁸⁹⁰

Bigger: ¹²³⁴⁵⁶⁷⁸⁹⁰

Although, for the sake of readability, you may just want to do something like 10 ^ 1234.
Or, for quotes, anything [1].

Answer 2

alt text is plain text, you can try to insert unicode supertext characters:

Value¹⁰

( ),

Answer 3

; alt text .

However, you can fake it using Unicode characters. (¹⁰)