ISO INTERNATIONAL STANDARD 25065 First edition 2019-05 Systems and software engineering Software product Quality Reguirements and Evaluation (SQuaRE) Common Industry Format (CIF) for Usability: User requirements specification Ingenierie des systemes et du logiciel - Exigences et évaluation de la qualité des systemes et logiciels (SQuaRE)Format industriel commun pour la facilite d'utilisation: Spécification des exigences de l'utilisateur Reference number IS0 25065:2019(E) os1 @ IS0 2019 IS0 25065:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2019 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, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0 25065:2019(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. .1 2 Normative references ..1 3 Terms and definitions ..1 3.1 Terms related to user requirements .2 3.2 Terms related to interactive systems ..4 3.3 Terms related to the concept of usability ..5 4 Conformance. ..6 5 User requirements specification .6 5.1 General ..6 5.2 Relationship between user requirements specification and stakeholder requirements specification ..7 5.3 Types of user requirements.. 7 5.3.1 General .7 5.3.2 User-system interaction requirements .7 5.3.3 Use-related quality requirements .7 6 Content elements ofa user requirements specification .8 6.1 Overview on the content elements .8 6.2 Interactive system for which a set of user requirements are specified .8 6.2.1 Identificationofinteractivesystem .8 6.2.2 Predecessors or previous versions of the interactive system (if applicable) ..8 6.3 Constraintsondesign .8 6.4 Context of use for which the user requirements apply .9 6.5 Goals and tasks to be supported ..9 6.6 User requirements. .10 6.6.1 Statinguserreguirements .10 6.6.2 Information to be provided with each user requirement ..12 6.6.3 Structure for presenting the user requirements ..14 6.7 User interface design guidance to be applied. .15 Annex A (informative) Example of content elements from a user requirements specification ..16 Bibliography .20 @ IS0 2019 - All rights reserved iii