The following code shows how to mark info icon.
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-2.0.0b1.js'></script>
<link rel="stylesheet" type="text/css"
href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/css/bootstrap-combined.min.css">
<script type='text/javascript'
src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/js/bootstrap.min.js"></script>
<style type='text/css'>
h3 {<!-- w w w . j av a 2 s .c om-->
margin-top: 50px;
}
</style>
<script type='text/javascript'>//<![CDATA[
$(window).load(function(){
$(document).ready(function() {
$('#example').tooltip();
});
});//]]>
</script>
</head>
<body>
<h3>
Permissions
<i class="icon-info-sign"
data-toggle="tooltip"
title="first tooltip"
id='example'></i>
</h3>
</body>
</html>