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;
— information panels;
— indications of physical dimensions;
— indications of intended positions of graphical elements;
— printed white, for example on transparent or metallic surfaces;
— printed varnish.