TAGS USED FOR FORMATTING TEXT [ <b>...</b> <strong>...</strong> <big>...</big> <em>...</em> <i>...</i> <small>...</small> _... ^... ]

this CODE will produce...

<br /><strong>STRONG TAG</strong>
<br /><b>BOLD TAG</b>
<br /><big>BIG TAG</big>
<br /><em>EMPHASIZED TAG</em>
<br /><i>ITALIC TAG USED</i>
<br /><small>SMALL TAG USED</small>
<br />_{SUBSCRIPT TAG}
<br />^{SUPERSCRIPT TAG USED}

...this OUTPUT

STRONG TAG

BOLD TAG

BIG TAG

EMPHASIZED TAG

ITALIC TAG USED

SMALL TAG USED

_{SUBSCRIPT TAG}

^{SUPERSCRIPT TAG USED}

Edit html code and see output online:
http://www.w3schools.com/html/tryit.asp?filename=tryhtml_formattingch