This document describes a method for storing data in a PDF file that correspond to the processing steps of printed products. This method has three parts:
1) metadata identifying processing steps,
2) limitations on the interaction between PDF graphics objects that are part of a processing step and other PDF graphics objects,
3) limitations on PDF graphics objects in processing steps.
This method is intended to be generic, i.e. not specific to packaging and labels.
In addition, this document defines the following packaging- and label-specific groups of processing-steps data:
— data corresponding to finishing steps, such as cutting, folding or glueing,
— Braille,
— information panels,
— indications of physical dimensions,
— indications of intended positions of graphical elements,
— printed white, for example on transparent or metallic surfaces,
— printed varnish.