Node type: Element (may contain text and/or other elements)
Whitespace: Not protected
Marks text that should be underlined.
Any combination:
= Optional element or attribute
<para paraID="4">In the days of typewriters, <emphasis>italics</emphasis> were represented by <underline>underlining.</underline></para>
In the days of typewriters, italics were represented by underlining.
Avoid using underlining for emphasis. Use italics or in rare instances bold. Generally, do not use this element to create underlining in elements like titles or captions. This will be done with paragraph styles in InDesign and on the Web.
Do not use an empty underline element to mark a blank for user input. Use block textInput or inline textInput elements instead.
Use the underline character style. To embed <underline> in another character style, apply the underline character attribute directly.