This is the object to add.
This flag is very useful to choose _where_ a new node will be added. Usually, you should add the item after the last one, but you can add it as the first line or in the middle of the list (same as afc_nodemaster_insert() command). Possible values are:
Use this one to add the node as the first in list.
Use this one to add the node AFTER the current one. (Same as afc_nodemaster_insert() method)
Use this one to add the node as the last in list.