This is a REST-based Web Service that accepts POST queries only. It has these parameters: id -- the ID of the list to create key -- the password for that list command -- either 'insert', 'append', or 'delete' value -- the value to insert, append, or delete position -- if 'command' is 'insert', where to insert The 'position' is the position of the element before which to insert the new value. When there are duplicates, 'delete' deletes the first one only.