IEC/IEEE 82079-1:2019 is jointly developed and published by IEC, IEEE, and ISO and provides general principles and detailed requirements for the design and formulation of all types of instructions for use that will be necessary or helpful for users of products of all kinds, ranging from a tin of paint to large or highly complex products, such as large industrial machinery, turnkey based plants or buildings. IEC/IEEE 82079-1:2019 cancels and replaces the first edition IEC 82079-1:2012. This edition constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition: a) The structure of this document has been rearranged in order to facilitate application of the standard and to make it easier to find information. Where possible, the language has been simplified. b) Information for use is introduced as a generic term. Instructions for use is a synonym for information for use. Step-by-step instructions is used as a subset of information for use. c) Clause 5 (principles) is revised and focuses on the purpose of information for use, the quality of information and the process for management of information. d) The process for preparation of information for use is integrated in the normative part and addressed comprehensively. e) Empirical methods for the evaluation of information for use are described in the normative part. f) The professional competencies needed for the preparation of information for use are addressed more comprehensively. g) Some aspects have been added to general requirements for information for use for complex systems of systems. h) Consideration is given to instructions for self-assembly products. i) An informative annex providing guidance on the fulfilment of specified requirements is introduced. This horizontal standard is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 108. One of the responsibilities of a technical committee is, wherever applicable, to make use of horizontal standards in the preparation of its publications. The contents of this horizontal standard will not apply unless specifically referred to or included in the relevant publications.