Subscript and superscript (subsup)
Confirm scientific or numerical expressions use
<sub>/<sup>
to accurately convey meaning to assistive tech.
Missing sup in scientific expression:
This paragraph has a scientific expression that lacks a proper
<sup> element:
The famous equation E=mc2...
Note: Hard to automatically test or detect. Requires a human tester or AI
to determine if a <sup> element is
necessary.