<sub> (Subscript)
This element renders its content as subscripted text.
Standard Syntax
<sub
class="class name(s)"</sub>
dir="ltr | rtl"
id="unique alphanumeric string"
lang="language code"
style="style information"
title="advisory text"
Attributes Defined by Internet Explorer
accesskey="key" (5.5)
contenteditable="false | true | inherit" (5.5)
disabled="false | true" (5.5)
hidefocus="true | false" (5.5)
language="javascript | jscript | vbs | vbscript" (4)
tabindex="number" (5.5)
unselectable="on | off" (5.5)
Standard Event Attributes
onclick, ondblclick, onkeydown, onkeypress, onkeyup, onmousedown, onmousemove, onmouseout, onmouseover, onmouseup
Events Defined by Internet Explorer
onactivate, onbeforeactivate, onbeforecopy, onbeforecut, onbeforedeactivate, onbeforeeditfocus, onbeforepaste, onblur, oncontextmenu, oncontrolselect, oncopy, oncut, ondeactivate, ondrag, ondragend, ondragenter, ondragleave, ondragover, ondragstart, ondrop, onfocus, onfocusin, onfocusout, onhelp, onlosecapture, onmouseenter, onmouseleave, onmousewheel, onmove, onmoveend, onmovestart, onpaste, onpropertychange, onreadystatechange, onresize, onresizeend, onresizestart, onselectstart, ontimeerror
Example
Here is some <sub>subscripted</sub> text.
The secret formula is X<sub><small>2</small></sub>
Compatibility
HTML 3.2, 4, and 4.01, XHTML 1.0
Internet Explorer 2, 3, 4, 5, 5.5, 6
Netscape 2, 3, 4, 4.5-4.8, 6, 7
Opera 4-7
Notes
The HTML 3.2 specification supports no attribute for <sub>.
The <sub> tag is removed from XHTML 1.1 since it can be created using the CSS property vertical-align.
Most browsers may slightly shift text lines below a <sub> tag.