u

Текст, находящийся в теге u, подчеркивается. Использование этого тега осуждается спецификацией html, взамен рекомендуется использовать стили.

Пример:

Таблица 3×3
Lorem ipsum dolor sit amet, consectetur adipisicing elit ... ...
... ... ...
... ... ...

<table>
    <caption>Таблица 3×3</caption>
    <col/>
    <tbody>
        <tr>
            <td>Lorem ipsum dolor sit amet, consectetur adipisicing elit</td>
            <td>...</td>
            <td>...</td>
        </tr>
        <tr>
            <td>...</td>
            <td>...</td>
            <td>...</td>
        </tr>
        <tr>
            <td>...</td>
            <td>...</td>
            <td>...</td>
        </tr>
    </tbody>
</table>

Дети:

A, ABBR, ACRONYM, APPLET, B, BASEFONT, BDO, BIG, BR, BUTTON, CITE, CODE, DEL, DFN, EM, FONT, I, IFRAME, IMG, INPUT, INS, KBD, LABEL, MAP, OBJECT, Q, S, SAMP, SCRIPT, SELECT, SMALL, SPAN, STRIKE, STRONG, SUB, SUP, TEXTAREA, TT, U, VAR.
html 3.2 html 4.0 Frameset html 4.0 Loose html 4.0 Strict html 4.0.1 Frameset html 4.0.1 Loose html 4.0.1 Strict xhtml 1 Frameset xhtml 1 Strict xhtml 1 Transitional html5
a
abbr
acronym
applet
b
basefont
bdo
big
br
button
cite
code
del
dfn
em
font
i
iframe
img
input
ins
kbd
label
map
object
q
s
samp
script
select
small
span
strike
strong
sub
sup
textarea
tt
u
var

Атрибуты:

class, dir, id, lang, onclick, ondblclick, onkeydown, onkeypress, onkeyup, onmousedown, onmousemove, onmouseout, onmouseover, onmouseup, style, title, xml:lang.
html 3.2 html 4.0 Frameset html 4.0 Loose html 4.0 Strict html 4.0.1 Frameset html 4.0.1 Loose html 4.0.1 Strict xhtml 1 Frameset xhtml 1 Strict xhtml 1 Transitional html5
class
dir
id
lang
onclick
ondblclick
onkeydown
onkeypress
onkeyup
onmousedown
onmousemove
onmouseout
onmouseover
onmouseup
style
title
xml:lang
Браузерные стили
Chrome
u { text-decoration: underline; }
firefox 3.6.3
u { text-decoration: underline; }
u:focus { outline: 1px dotted; }
IE, opera 10.53, safari 4.0.5
u { text-decoration: underline; }