中国的列车根据速度可分为不同类别，以不同的字母和编号区分。

According to the speed, Chinese trains are divided into different classes, identified (确认) with different letters and numbers.

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通过提供新的可视代码片段类型(包括转换程序和编号)，以及通过在一个类别中提供更多的可视代码片段，对可视代码片段支持进行了改进。

Visual snippets support has been improved by providing new categories of visual snippets, including converter and Numbers; as well as by providing more visual snippets within a category.

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比如：存档日期、草稿或版本编号、文件条目鉴定者、卷宗鉴定者、类别代号、登记号、生成者名称等。

Examples: archival date, draft or version number, record item identifier, dossier identifier, class code, registration number, name of creator.

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比如：存档日期、草稿或版本编号、文件条目鉴定者、卷宗鉴定者、类别代号、登记号、生成者名称等。

Examples: archival date, draft or version number, record item identifier, dossier identifier, class code, registration number, name of creator.

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