为表格中的每个股票代号重复以前的步骤。
Repeat the previous step for each stock symbol in the table.
例如，对于一个股票代号的购买和出售订单就需要依次处理。
For example, buy and sell orders for a stock symbol need to be processed in order.
清单1显示了用于以html格式创建此股票代号表单的标记片段。
Listing 1 shows the markup fragment used to create this stock ticker form in HTML.
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