sup tag style tag TAG:  sub <sub> ... </sub> Available in versions: 3.2, 4.0 Browser compatibility: Explorer 4, 5  Netscape 4, 6   The <sub> tag is used to insert subscript into a text. This allows the correct display of chemical equations, footnotes, math formulas, and scientific notation on a web page.   Most browsers reduce the text size by half for the subscript (and superscript), but use the same font face as used for the rest of the text. However, you can use style sheets and the style attribute to effect the appearance of the text to suit your desires.   The similar sup tag is used to create superscripts.   The closing tag is mandatory.   Core Attributes   class    dir    id    lang    onclick    ondblclick    onkeydown    onkeypress    onkeyup    onmousedown    onmousemove    onmouseout    onmouseover    onmouseup    style    title   Attributes   None.   Code: 2H<sub style="color:red;">2</sub>+O<sub style="color:red;">2</sub> -> 2H<sub style="color:red;">2</sub>O   Output: 2H2+O2 -> 2H2O   Copyright 1999-2001 by Infinite Software Solutions, Inc. All rights reserved. Trademark Information