GPL要求所有拷贝都带有正确的版权标记。
The GPL requires all copies to carry an appropriate copyright notice.
例如，旧版本的GNUbc在启动时显示强迫性的版权标记。
For instance, old versions of GNU BC displayed an intrusive copyright notice when started.
Unicode字符版权标记字符0xA9 = 1010 1001用UTF-8 编码如下所示
The Unicode character copyright sign character 0xA9 = 1010 1001 is encoded in UTF-8 as
以GPL发布程序(所要做)的一部分就是以你的名字写一份版权标记(假设你是版权持有者)。
Part of releasing a program under the GPL is writing a copyright notice in your own name (assuming you are the copyright holder).
当一位读者在自己最喜欢的许多本书上发现同一个版权标记时，他就会意识到，这个出版社出的书很符合他的阅读兴趣，日后就有可能追踪这个出版社所出的书。
When a reader starts noticing the same colophon on all their favorite books they may realize this publisher appeals to their reading preferences and may follow future publications.
当一位读者在自己最喜欢的许多本书上发现同一个版权标记时，他就会意识到，这个出版社出的书很符合他的阅读兴趣，日后就有可能追踪这个出版社所出的书。
When a reader starts noticing the same colophon on all their favorite books they may realize this publisher appeals to their reading preferences and may follow future publications.
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