ISO INTERNATIONAL STANDARD 9241-2 First edition 1992-06-01 Ergonomic requirements for office work with visual display terminals (VDTs) --.. Part 2: Guidance on task requirements Exigences ergonomiques pour travail de bureau avec terminaux a ecrans de visualisation (TEV) - Partie 2: Guide general concernant les exigences des taches Reference number ISO 9241-2:1992(E) ewithIso Not for Resale without license from IHS ISO 9241-2:1992(E) Foreword Iso (the International Organization for Standardization) is a woridwide federation of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International_ organizations, govern- mental and non-governmental, in liaison with Iso, aiso take part in the work. iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IsO 9241-2 was prepared by Technical Committee Iso/TC 159, Ergonomics, Sub-Committee SC 4, Signals and controls. iso 9241 consists of the following parts, under the general title Ergonomic requirements for office work with visual display terminals (VDTs): Part 1: General introduction -- Part 2: Guidance on task requirements - Part 3: Visual display requirements --- Part 4: Keyboard requirements Part 5: Workstation layout and postural requirements 一 - Part 6: Environmental requirements --. Part 7: Display requirements with reflections - Part 8: Requirements for displayed colours Part 9: Requirements for non-keyboard input devices Part 10: Dialogue principles ISO1992 All rights reserved. No part of this publlcation may be reproduced or utilized in any form or by, any means, electronlc or mechanical, including photocopylng and mlcrofilm, without permission In writing from the publisher. International Organlzation for Standardization Case Postale 56 · CH-1211 Geneve 20 · Switzerland Printed in Switzerland 1i Not for Resale censefromIHS ISO 9241-2:1992(E) Part 11: Usability statements 一 Part 12: Presentation of information Part 13: User guidance 一 -- Part 14: Menu dialogues -- Part 15: Command dialogues Part 16: Direct manipulation dialogues Part 17: Form filling dialogues 11i Not for Resale