When printing, you can specify attributes that describe how you want to print a document.
打印时，您可以指定一些属性来描述您想如何打印文档。
They can tell you that they receive 20 calls every day from customers who donâ t understand how to set up a printer, but hardly any calls about how to actually print a document.
例如，他们会告诉你说，他们每天会接到20通客户咨询电话，询问如何设置一台打印机，但是几乎没有客户会打电话来问如何把某个文件打印出来。
Is it an error if you print a document, only to find that no printers are connected?
如果你在打印一个文档，却发现没有连接打印机，这是个错误吗？
When overridden in a derived class, completes the control sequence that determines when and how to print a document.
在派生类中重写时，完成一个确定何时以及如何打印文档页的控制序列。
When overridden in a derived class, completes the control sequence that determines when and how to print a document.
在派生类中重写时，完成一个确定何时以及如何打印文档页的控制序列。
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