LANGUAGE
Use the LANGUAGE macro to specify the language when you set up dependencies so that you can include country/region-specific parts in your build. If you are building a product for the United States, you might want to include a United States icon. However, if you are building for Korea, you would want to use a Korean icon.
In the Windows Driver Kit (WDK), the default value is LANGUAGE=USA.
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Build date: 5/3/2011