This Enfocus PitStop command allows us to check if a document has NChannel colour spaces with custom aliases of process colours that are different from their natural names.
As mentioned above, in their definition, NChannel colour spaces must have a Process dictionary in the attribute dictionaries that clearly identify the four-colour process colours involved. This identification can be done with natural names (easily deducible, that is "trivial") or with custom aliases such as "our blue 01" (difficult to guess, that is "non-trivial").
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