While the DOCTYPE declaration informs a browser to use standards mode, it will still parse the HTML according to the rules in that DTD — in this case, HTML 4.0.

虽然DOCTYPE声明告诉浏览器使用标准模式，但是它仍然会根据那个DTD——即HTML 4.0的规则去解析html。

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Because PSGML allows you to specify only one particular SGML declaration to be used, via the sgml-declaration (or sgml-xml-declaration for XML mode), the DTDDECL catalog feature can come in handy.

因为PSGML仅允许您指定一个要使用的特定sgml声明，通过sgml - declaration(或者xml方式的sgml - xml - declaration)，就可以方便地使用DTDDECL目录特性了。

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While in Break mode, however, you are generally not allowed to change declaration statements, such as public methods, public fields, or class declarations.

但是，在中断模式下一般不允许对声明语句(如公共方法、公共字段或类声明)进行更改。

youdao

While in Break mode, however, you are generally not allowed to change declaration statements, such as public methods, public fields, or class declarations.

但是，在中断模式下一般不允许对声明语句(如公共方法、公共字段或类声明)进行更改。

youdao