The header section contains metadata for the entire message.

头部分包含整个消息的元数据。

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Paste this string in your HTML page's header section and write the following alert.

将此字符串粘贴到html页面的标题部分中，然后编写以下警报。

youdao

The SOAP message protocol defines a SOAP header section, where such information can be passed.

SOAP消息协议定义了一个SOAP报头，可以在其中传递这类信息。

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In the text payload, a section called UDH (User Data Header) is optional but defines lot of advanced features not all mobiles are compatible with.

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