This Enfocus PitStop command allows us to change or assign a PDF/X key to a PDF document. It is important to remember that this key change or assignment does not make a document PDF/X compliant, meeting the conditions imposed by that variant of that standard. It only adds the internal mark that identifies it as if it did.
The admited tags in the 2020 version of PiStop are the following ones, but this will likely change with each update:
It should be remembered that the PDF/X-3 level of these standards became obsolete in favor of the PDF / X-4 versions (from 2008 and 2010).
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