Although the most common Web page formatting language is HTML, the concept behind document formatting actually had its roots in the 1960s with the development of Generalized Markup Language (GML).

• 虽然最常见的网页格式化语言是HTML,实际上文档格式的概念早在20世纪60年代随着通用置标语言(GML)的发展就形成了。