The common CGFX is used if the CGFX offset for the system region/language is zero. Those optional offsets are unused in extdata exbanner, separate CBMD banner files can be used for each region/language instead.
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The common CGFX is used if the CGFX offset for the system region/language is zero. Those optional offsets can be used in extdata exbanner, but separate CBMD banner files for each region/language can be used as well.