HTML u tag
HTML <u> tag defines the underline text. It is used to underline the spelling mistakes in textual area.
Tag Uses
Specific uses of <u> tagThere are many other cases where other elements are more appropriate instead of u element.
cite is for titles.
i (italic) is for ship names.
em (emphasize) should be used for emphatic stress.
b (bold) should be used for keywords.
mark is should be used highlight words in searching process.
Tag omission
Both starting and ending tags are necessary for u element.
Global Attributes
All the global attributes are applicable on u element.