线图可以另存为jpeg图像，报告可以另存为HTML，原始数据可以另存为CSV文件。
A line plot can be saved as a JPEG image, a report can be saved as HTML, and raw data can be saved as a CSV file.
示例 PHP 应用程序构建一个 Excel XML 文件，其中为原始数据和 PivotTable 分别具有一个工作簿。
The example PHP application builds an Excel XML file that has one worksheet for the raw data and another for the PivotTable.
没有对原始数据的映射，现在只有新的数据块在消耗文件系统中的磁盘空间。
Instead of a map to the original data, there are now new blocks with data, consuming disk space in the file system.
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