怎么样取得数据窗口中所有的TEXT和计算字段的列表？
Like how to obtain all of the TEXT data window and computing the list of fields?
因为本示例涉及一个columnfixture表，所以第二行会标识给定的和计算的字段列名称。
Because this example involves a ColumnFixture table, the second row identifies the names of the given and the calculated field columns.
应用程序必须知道每个字段的次序和类型，因为它必须计算该字段在记录中的偏移量。
The application must know the order and type of each field since it must calculate its offset in the record.
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