HTML5 MathML accent Attribute

Definition and usage

The accent attribute takes true or false. When true, the over- or under-script is drawn close to the base, as with a hat, bar or tilde. When false, it is spaced further from the base, appropriate for limits such as those above a summation sign.

Which elements use it

• <mover> - accent above the base.
• <munder> - accent below the base (as underaccent).
• <munderover> - accents both above and below.

Example

<math>
  <mover accent="true">
    <mi>x</mi>
    <mo>&#175;</mo>
  </mover>
</math>

With accent="true", the bar sits snugly over x to denote the mean (x-bar); setting it false would push the bar higher and further from the letter.