Start at the Currently Selected Page Path to use the currently selected page as the starting point of the navigation. This populates the Start Path property with the following EL expression:
Start at This Level of the Currently Selected Page Path to use the nth level of the path to the currently selected page as the starting point of the navigation (where n is the number specified in the field next to this option). This populates the Start Path property with the following EL expression:
where path is the path to the navigation model XML file (omitting the trailing .xml) and level is the number specified in the field.
Select Page Path to use a specific page as the starting point of the navigation. This populates the Start Path property with the path to the selected page.