与显示绑定附件不同，它是文档文字封装式风格。

Unlike an explicitly bound attachment, it has a document literal wrapped style.

youdao

它支持rpc文字、rpc编码和文档文字形式。

This supports RPC literal, RPC encoded, and document literal styles.

youdao

接口操作不限于文档文字非封装式或RPC文字绑定风格。

An interface operation is not restricted to only a document literal non-wrapped or RPC literal binding style.

youdao