What you gain, regardless of schema language, is not a magic wand that suddenly makes all XML documents transparent to every person and application.

无论使用何种模式语言，都不会得到全能的方法，因此不可能一下子使 XML 文档对所有人和应用程序透明。

youdao

As magic is all about secrets, you might expect magicians' tricks would gain protection under the principle of trade secrets - this is how Coca-Cola guards its recipe and how KFC protects the spices it uses on its chicken, for example.

BBC: The magicians who rip off other conjurers' tricks