Add / Delete items
Insert new child item
Item label
Insert new item next
Item label
Delete item
0s passed to the function for arguments 4-7 (function to call on select, images) mean use default values for them
Last argument is a comma delimited string of following possible value (upper case only):
SELECT - move selection to this node after inserting
CALL - call function on select
TOP - add node to the top position
CHILD - node has children
CHECKED - checkbox is checked (if exists)