<!-- rel-licence -->
<!-- Links to the licence document for the page in question -->
<!-- 
NOTE: If embedded inside hReview, the licence is for that review, 
not the whole document 
-->
<a href="http://www.creativecommons.org/..." rel="licence">Licence</a>

<!-- rel-tag -->
<!-- Tags the page, or a large part of the page as being about microformats -->
<!-- 
NOTE: When used inside another microformat (hAtom), it applies to that 
microformat, not the whole page 
-->
<a href="http://technorati.com/tag/microformats" rel="tag">microformats</a>

<!-- rel-nofollow -->
<!-- The page linked to will gain no PageRank from the link -->
<!-- 
NOTE: 	Google follows the link, no PageRank added
		MSN: Page isn't followed, doesn't index the page
		Yahoo: Follows the link and indexes the page  
-->
<a href="http://www.bbc.co.uk/" rel="nofollow">BBC Site</a>

Simple usage of the rel attribute in your HTML using microformats.

Usage of the Rel Attribute in Microformats (licence, tag, nofollow)

HTML