Indicates the style of underline to be used on display or in print, for example, “single”, “double”, or “dashed”
This attribute was added to preserve this information when a publisher supplies it. The use of the attribute doe not guarantee that the display will produce the formatting requested.
|Text, numbers, or special characters||The style of underlining requested; for example, “double” would mean underlined by two rules, very close together.|
|Restriction: This attribute may be specified if the element is used.|