This page applies to Harlequin v13.1r0 and later; both Harlequin Core and Harlequin MultiRIP
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Controls non-zero overprinting of vector and text DeviceCMYK objects (not images or shadings) by acting as a default for the graphics state overprint mode attribute. This value can be changed by a job when OPM is set (PDF) or with the setoverprintmode operator (PostScript). Further details of overprint mode are in the PDF reference.
Default: true . N.B. The default in both the PDF and PostScript reference manuals is false.
See also: OverprintICCBased and OverprintGray user parameters, and the Overprint system parameter.