This document specifies an extensible file format in conformity with W3C Extensible Markup Language (XML) 1.0, for the exchange of print quality data and metadata between quality control applications including but not limited to colour measurement, process control and quality management systems.st edition 2020-03 Graphic technology — File format for quality control and metadata — Part 2: Print Quality eXchange (PQX) Technologie graphique — Format de fichier pour le contr？le qualité et les métadonnées — Partie 2: PQX (Print Quality eXchange) Reference number ISO 20616-2:2020(E) ？ ISO 2020 ISO 20616-2:2020(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2020<