Flag Salute?

From: rudyray1951@hotmail.com

Can any of my SCV brethren tell me where the current way of saluting the Confederate Flag came from (right arm extended and palm of hand turned up)? It seems like the salute itself came from the UDC but in their protocol page they say to place right hand over heart when saluting the Confederate Flag. But everywhere I go the current practice is the palm turned up. When and where and why did this come about?