Export for printing: ProPhoto RGB vs DXO Wide Gamut

DxO Wide Gamut is a working color space from PL6, but no such output.

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note – DxO WG is partly wider than ProPhoto, but also different

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ProPhotoRGB vs AdobeRGB vs DCI-P3

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the printing reality → ProPhotoRGB vs Canson PlatineFibreRag (P800) vs 1FS_PFLustre (Pro1000)