 multiple tiffgray files.
A tiffgray file is created for each separation.

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The file specified via the OutputFile command line parameter will contain
CMYK data. This data is based upon the CMYK data within the file plus
an equivalent CMYK color for each spot colors which is present. The equivalent
CMYK color for each spot colors is determined using the alternate tint transform
function specified in Separation and DeviceN color spaces. Since
this file is created based upon having color planes for each col