`<overline>`

An overline is a horizontal line that is printed above a line of text, a mathematical symbol, or an illustration in a newspaper or journal.

Rendering expectations

The content of the <overline> element is typically rendered with a line above it.

The <overline> element is specialized from <ph>. It is defined in the highlighting-domain module.

The following attributes are available on this element: universal attributes and @keyref.

The following code sample shows an <overline > element used to provide the highlighting used for mathematical notation:

<p>Overline: <overline><i>x</i></overline> is the 
average value of<i>x<sub>i</sub></i></p>