BROKER'S COMMISSION
6. The percentage or commission due to the broker is included in the amount deposited to protect the deal, which is called a margin. If there should be a decline in price of either stock or grain, sufficient to cause the broker to feel insecure, he always reserves the right to call upon the customer for an additional deposit, even though the time of delivery has not yet arrived. In case the customer fails to make such additional deposit, the broker can sell the securities, grain, or other purchase, at once, in order to protect himself; the amount primarily deposited by the customer is thereby forfeited.
All orders for the purchase and sale of any article are received and executed with the distinct understanding that actual delivery is contemplated and that the party giving the order so understands and agrees.