This European Standard provides terms and definitions on concepts and parameters used for EN 1005-21), prEN 1005-3, EN 1005-41) and EN 1005-51). Basic concepts and general ergonomic principles for the design of machinery are dealt with in EN 292-1, EN 292-2 and EN 614-1. This document is not applicable to specify the machinery which is manufactured before the date of publication of this document by CEN.