Often, the procedure is to cancel the original order and produce a new order with both the content of the original order and the additional order items.
通常，处理程序是取消原有的订单，并产生一个新订单，新订单中同时包含原有订单的内容和追加的订货。
Parameters - Additional order form URL parameters.
参数—订购单链接的附加参数。
Parameters - Additional order form URL parameters.
参数—订购单链接的附加参数。
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