HI to all

I just know some of the meta tags like robots , keywords and description. so does anyone know the full source of all tags which can be useful with point of seo...

Google is your friend -
http://www.google.com/search?q=html+...8&aq=t&rls=org

Don't forget to add the ALT tags on your images. These not only help people with sight difficulties but they can also alter your page rankings for the better.

Don't forget to add the ALT tags on your images.

ALT is NOT a TAG, it is an ATTRIBUTE

so does anyone know the full source of all tags which can be useful with point of seo...

None of them at all.

I think this is most of the meta-tags that are available.

<meta name="description" content="description goes here" />
<meta name="keywords" content="keywords of your site goes here" />
<meta name="Subject" content="subject of website goes here"/>
<meta name="Classification" content="how you would classify your topic"/>
<meta name="ABSTRACT" content="can be treated sort of like the title of the page"/> <meta name="Distribution" content="Global"/>
<meta name="Rating" content="General"/>
<meta name="robots" content="index, follow"/>
<meta name="Robots" content="All"/>
<meta name="country" content="USA"/>
<meta name="identifier" content="your website url goes here"/>
<meta http-equiv="imagetoolbar" content="no" />
<meta name="author" content="the author name goes here" />
<meta http-equiv="content-language" content="en-US" />
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />