You can now change the attribute of a node with a single clic on the page. Here is some example code:

<ul do='tasks in project'>
  <li do='each' set_class='[d_status]todo'>
    <r:swap states=',done'>clic-me</r:swap> <r:link/></li>
</ul>

For this to work, you need to set the styles for classes “todo” and “donetodo”. Default value is always the first element in the list. See swap.