This is a link to the 
<a href='http://www.cse.iitm.ac.in'>CSE Department's webpage</a> from 3.html.
<p>
And <a href='http://www.cse.iitm.ac.in/~rupesh/teaching/ssad/jan26/'>this is our course webpage</a>.
<p>
And <a href='http://www.cse.iitm.ac.in/~rupesh/teaching/ssad/jan26/' target=_blank title="Takes you to the course webpage">this</a> opens the course webpage in a new tab.
<hr>
<i>href</i>, <i>title</i>, and <i>target</i> are called attributes of element &lt;a&gt;.