<u>
   
An underline, also called an underscore, is a line immediately below a portion of text.
Rendering expectations
The content of the <u>
        element is typically underlined.
Specialization hierarchy
The <u> element is
        specialized from <ph>. It is defined in the
        highlighting-domain module.
Content model
(Text | <cite> | <include> | <keyword> | <ph> | <q> | <term> | <text> | <tm> | <xref> | <data> | <draft-comment> | <foreign> | <required-cleanup>)*
Not contained by any element.
Not contained by any element.
Inheritance
+ topic/ph hi-d/u
The <u> element is specialized from <ph>. It is defined in the hi-domain module.
Attributes
The following attributes are
        available on this element: universal
                                                  attributes and @keyref.
The following attributes are available on this element: universal attributes and the attributes defined below.
- @keyref
- Specifies a key name that acts as a redirectable reference based on a key definition within a map. See The keyref attribute for information on using this attribute.
Example
This section is non-normative.
The following code sample shows underlining used to provide emphasis in a marketing blurb, without giving any extra meaning to the underlined phrase:
<p>Using our patented <u>SuperFast BitSpeed Technology</u>, our product
will answer all of your questions only a few nanoseconds after you ask!</p>