另外，每个页面都可以有一个robots标记，它指示爬行器是否将这个页面编入索引，以及是否沿着其中的链接前进(参见参考资料。)
In addition, each page can encode a robots tag that instructs the spider about whether to index that page and follow links from it. (See Resources.)
页面中的第一个HtmlForm控件被呈现后，会有一个布尔标记被设为true，此标记指示了是否有HtmlForm已被呈现，当另一个HtmlForm试图呈现时，由于此标记已经被设置为true因而引发一个异常。
The flag thus indicates whether any other HtmlForm control has been rendered. When another HtmlForm attempts to render, the flag will already be true causing an exception to be thrown.
TIME标记指示发送邮件的时间和接收邮件的时间之间有一个明显的时间延迟。
The time stamp indicates that there was a significant time delay between the time that the message was sent and the time that the message was received.
TIME标记指示发送邮件的时间和接收邮件的时间之间有一个明显的时间延迟。
The time stamp indicates that there was a significant time delay between the time that the message was sent and the time that the message was received.
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