一旦您完成新增您的数据和尺寸，您可以预览报表。
Once you have finished adding your metrics and dimensions, you can preview the report.
注意你也可以利用工具栏以其他被支持的格式来预览报表。
Note that you can also preview reports in other supported formats using the toolbar.
随后，当我们调用来打印或预览报表，我们简单地调用报表对象来绘制自己。
Later, when we are called to print or preview the report, we simply call upon the report object to draw itself.
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