This documentation is still in progress. We are working hard to update all our screenshots to the new Magnolia 6 style. Please bear with us.
Action popup is a context menu that is displayed when the user right-clicks an item. You should only display often used actions in the popup so that it remains usable. If your app only has a few actions, you may want to simply extend the action bar. This way the popup displays the same actions as the action bar. Extending also allows you to manage the items in one place (action bar definition) rather than two.