This document specifies the use of the Portable Document Format (PDF) 2.0, as formalized in 
ISO 32000-2:—, for preserving the static visual representation of page based electronic documents over 
time in addition to allowing any type of other content to be included as an embedded file or attachment.
This document does not apply to:
— specific processes for converting paper or electronic documents to the PDF/A format;
— specific technical design, user interface, implementation, or operational details of rendering;
— specific physical methods of storing these documents such as media and storage conditions;
— required computer hardware and/or operating systems.st edition 2020-11 Document management — Electronic document file format for long-term preservation — Part 4: Use of ISO 32000-2 (PDF/A-4) Reference number ISO 19005-4:2020(E) ？ ISO 2020 ISO 19005-4:2020(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no par