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This document specifies how to extend the ISO 32000-2 specification by adding the ISO 10303-242 (STEP AP 242) format as a valid format for 3D assets contained in a RichMedia annotation. It is intended for:

.     developers of software that creates PDF files (PDF writers);

.     software that reads existing PDF files and usually interprets their contents for display (PDF readers);

.     software that reads and displays PDF content and interacts with the computer users to possibly modify and save the PDF file (PDF processors);

.     PDF products that read and/or write PDF files for a variety of other purposes (PDF processors).

Note             PDF writers and PDF readers are more specialised classifications of PDF processors.

This document does not specify the following:

.     specific processes for converting paper or electronic documents to the PDF file 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;

.     methods for validating the conformance of PDF files or PDF processors;

.     required computer hardware and/or operating system.