An NPC that gives you rupees only one when you talk to him/her.
An NPC that takes rupees from you only once when you talk to him/her.
An NPC that gives/takes/trades an item when you talk to him/her. (even though this one can easily be done with string control codes and custom items)
Anyway, D0 would be the string to display before giving/taking the rupees/item.
D1 would be the string to display after giving/taking the rupees/item.
D2 would be the amount of rupees/ID of item to give/take.
D3 (for trading only) would be what item to give in return.
Edited by XMuppetSB, 13 September 2010 - 12:15 AM.