ISO/IEC INTERNATIONAL STANDARD 15909-3 First edition 2021-11 Systems and software engineering High-level Petri nets - Part 3: Extensions and structuring mechanisms Ingenierie du logiciel et des systemes - Réseaux de Petri de haut niveau Partie 3: Extensions et meécanismes de structuration Reference number IEC IS0/IEC15909-3:2021(E) OSI @IS0/IEC2021 IS0/IEC 15909-3:2021(E) COPYRIGHTPROTECTEDDOCUMENT @IS0/IEC2021 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, withoutpriorwrittenpermission.Permission can berequestedfrom eitherIso at theaddress below orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0/IEC 2021-All rights reserved