HTML5 MathML movablelimits Attribute

Definition and usage

The movablelimits attribute takes true or false. When true, an operator's scripts (such as summation limits) render above and below it in display style, but move to the side in inline style to save vertical space. Operators like the summation sign have movablelimits set to true by default.

Which elements use it

• <mo> - controls whether attached limits move between the over/under and sub/sup positions.

Example

<math display="block">
  <munderover>
    <mo movablelimits="true">&#8721;</mo>
    <mrow><mi>k</mi><mo>=</mo><mn>0</mn></mrow>
    <mi>n</mi>
  </munderover>
</math>

In display style the limits k=0 and n sit below and above the summation sign; in inline style they would move to subscript and superscript positions.