ISO/IEC INTERNATIONAL STANDARD 7942-4 First edition 1998-09-01 Information technology - Computer graphics and image processing - Graphical Kernel System (GKS) -- Part 4: Picture part archive Technologies de I'information Infographie et traitement d'image- Systeme graphique Kernel (GKS) - Partie 4: Archive de partie d'image IEC Reference number ISO/IEC 7942-4:1998(E) Copyright Intermational Organization for Standardization nitted without license from IHS Not for Resale ISO/IEC 7942-4:1998(E) Contents Foreword. .iii Introduction. 1 Scope. 2 Normative references. 3 Definitions... 4.1 The structure of a GKS-94 picture part archive 4.2 Metafile elements 4.3 Delimiter elements.. 4.4 Functional capability 4.4.1 Introduction .. 4.4.2PPA-SET. 4.5Representationofpicturepartsinthepicturepartarchive 5 Abstract specification of new element..... 5.1 Data type definitions and abbreviations... 5.2 Delimiter element 6 Encodings of the GKS-94 Picture Part Archive ... 6.1 Introduction....... 6.2 Character encoding 6.3 Binary encoding 6.4 Clear text encoding A Formal grammar.. B New element list. 10 B.1 Introduction .10 B.2 Delimiter elements.. 10 ?ISO/IEC1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utized in any form or by any means, electronic or mechanical, including photocopying and micro- film, without permission in writing from the publisher. ISO/IEC Copyright Office · Case postale 56 . CH-1211 Geneve 20 . Switzerland Printed in Switzerland ii Copyright Intermational Organization for Standardization ed without license from IHS Not for Resale @ ISO/IEC ISO/IEC 7942-4:1998(E) Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commis sion) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non- governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. International Standard ISO/IEC 7942-4 was prepared by Joint Technical Committee ISO/IEC JTC 1, Informa- tion technology, Subcommittee SC 24, Computer graphics and image processing ISO/IEC 7942 consists of the following parts, under the general title Information technology - Computer graphics and image processing - Graphical Kernel System (GKS): Part I: Functional description Part 2: NDC metafile Part 3: Audit trail Part 4: Picture part archive Annexes A and B form an integral part of this part of ISO/IEC 7942. ili CopyrghtmatinalOrganizatinfoStandardzation nitted without license from IHS Not for Resale