1% PDF/X-4p 2 3\enabletrackers[backend.format,backend.variables] 4 5\setupbackend 6 [format=PDF/X-4p, 7 intent={ISO Coated v2 (ECI)}, 8 profile={sRGB.icc,default_gray.icc}] 9 10\input pdf-x-common.mkiv 11