SGML stands for &quot; Standard Generalized Markup Language &quot; . SGML is based on the idea that documents have structural and other semantic elements that can be described without reference to how such elements should be displayed. The actual display of such a document may vary, depending on the output medium and style preferences. In structured texts, SGML not only defines structures (in the DTD = Document Type Definition) but also ensures they are consistently used.
SGML 代表“标准通用置标语言”。SGML 的基本思想是：文档具有的结构元素和其他语义元素与这些元素的显示方式没有关系。这类文档的实际显示可以有多种方式，具体显示取决于选择的输出媒介和样式。在结构化的文本中，SGML 不仅对结构进行了定义 (采用“DTD = 文档类型定义”的形式)，而且确保它们可以被连续使用。