The <msup> MathML element is used to attach a superscript to an expression.
It uses the following syntax: <msup> base superscript </msup>.
This element's attributes include the global MathML attributes as well as the following deprecated attribute:
superscriptshift A <length-percentage> indicating the minimum amount to shift the baseline of the superscript up.
Note: For the superscriptshift attribute, some browsers may also accept legacy MathML lengths.
<math display="block">
<msup>
<mi>X</mi>
<mn>2</mn>
</msup>
</math><msub> (Subscript)<msubsup> (Subscript-superscript pair)<mmultiscripts> (Prescripts and tensor indices)