HTML5 MathML <mover> Tag

Definition and usage

The <mover> element takes exactly two children: the base first, then the over-script. When the accent attribute is set to true, the over-script is drawn tight against the base like a diacritic; when false, it sits higher, as with a limit above an operator.

Syntax

<mover accent="true">
  <!-- base -->
  <!-- overscript -->
</mover>

Example

<math>
  <mover accent="true">
    <mi>v</mi>
    <mo>&#8594;</mo>
  </mover>
</math>

This draws a rightwards arrow over v to denote a vector. Setting accent to true keeps the arrow close to the variable as an accent.