anchor

Adds an anchor to this part of the page.

The attribute can either be 'true' or some value taken from the node, like the name for example : '[name]'.
see anchor 
<li do='each' anchor='true'><r:text/></li>
<li do='title' anchor='[name]'>The super page</li>

The first example shows renders an anchor like <a name='node22'/>. The second would be <a name='super'/> if the name of the page was ‘super’.