ONORM EN ISO 9241-11 : 1999

National foreword
Foreword
Introduction
1 Scope
2 Normative reference
3 Definitions
4 Rationale and benefits
5 Specifying and measuring the usabiity of products
6 Specification and evaluation of usability during design
7 Specifying and measuring a work system in use
Annex A (informative) Example of how to specify the context
of use
Annex B (informative) Examples of usability measures
Annex C (informative) Example of a usability requirements
specification
Annex D (informative) Relationship to other International
Standards
Annex E (informative) Bibliography
Figure 1 Usability framework
Figure 2 Usability activities and associated documents
Table A.1 Example of attributes of the context of use
Table B.1 Examples of measures of usability
Table B.2 Examples of measures for desired properties
           of the product
Table C.1 User characteristics

Specifies usability and explains how to identify necessary information for taking into account when defining or evaluating usability of a visual display terminal in terms of measures of user performance and satisfaction. Gives guidance on describing the context of use of the product (hardware, software or service) and the relevant measures of usability in an explicit way.