From http://www.w3schools.com (Copyright Refsnes Data)

HTML 5 <sub> and <sup> tags


Definition and Usage

The <sub> tag defines subscript text. The <sup> tag defines superscript text.


Differences Between HTML 4.01 and HTML 5

NONE


Example

Source Output
This text contains <sub>subscript</sub>

This text contains <sup>superscript</sup>
This text contains subscript

This text contains superscript


Standard Attributes

class, contenteditable, contextmenu, dir, draggable, id, irrelevant, lang, ref, registrationmark, tabindex, template, title

For a full description, go to Standard Attributes in HTML 5.

Event Attributes

onabort, onbeforeunload, onblur, onchange, onclick, oncontextmenu, ondblclick, ondrag, ondragend, ondragenter, ondragleave, ondragover, ondragstart, ondrop, onerror, onfocus, onkeydown, onkeypress, onkeyup, onload, onmessage, onmousedown, onmousemove, onmouseover, onmouseout, onmouseup, onmousewheel, onresize, onscroll, onselect, onsubmit, onunload

For a full description, go to Event Attributes in HTML 5.


Try-It-Yourself Demos

Subscript and superscript
How to use the sub and sup elements.


From http://www.w3schools.com (Copyright Refsnes Data)