When you send out WML from a GSP, you must override the default MIME type from text/html to text/vnd.wap. wml, as in the first line of Listing 1.

当从 GSP 中发送出 WML 时，切记要将默认的 MIME 类型 text/html 替换为 text/vnd.wap.wml，如清单 1 中的第一行所示。

youdao

These tags are similar in concept to the familiar HTML labels that help format text and other data on webpages.

BBC: NEWS | Technology | Yahoo makes semantic search shift