This document provides guidance on the development and use of ISO publications supported by software. The software largely relates to statistical calculations considered by the subcommittees of ISO/TC 69, Application of statistical methods, but many other numerical calculations are covered by similar considerations. In terms of the development of ISO publications, this document gives guidance on the traceability of data products (figures, tables and other numerical results) reproduced in normative-type documents. In terms of assisting users of ISO publications, this document gives guidance on information that should be included in ISO publications regarding software specification, categories of support for software, and software performance including the use of reference data sets for testing purposes. Examples are included that illustrate aspects of the guidance provided. Reference to ‘the Committee’ in this document relates to the ISO body concerned with developing the relevant ISO publication.