You can check the edition number in the copyright page.
您可以在版权页上查到版次。
Finally, you might have footer links to information such as copyright, privacy policy, and so forth — links that are important but can be less obvious than other links on the page.
最后，还有链接到版权、隐私策略等信息的页脚链接——这些链接是有意义的，但是与页面上的其他链接相比不太重要，希望以不太醒目的方式显示。
About: Launches a page that contains an image with the product name and copyright information.
About：启用一个包含了具有产品名和版权信息的图像的页面。
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