If the version is lower than the current version, the application must turn on backward compatibility.

如果版本低于当前版本，应用程序必须求助于向后兼容性。

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For example, in the case where XML is used as a standard for data exchange, the application must provide backward or forward compatibility to older or newer versions of the standard.

例如，如果将XML用作数据交换标准，应用程序必须提供向前和向后兼容性，以支持较新或较旧的版本标准。

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Backward compatibility means that an application developed for a particular version of a platform will run on later versions of that platform.

回溯相容性表示针对特定平台版本开发的应用程序将会在该平台的较新版本上执行。

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Backward compatibility means that an application developed for a particular version of a platform will run on later versions of that platform.

回溯相容性表示针对特定平台版本开发的应用程序将会在该平台的较新版本上执行。

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