This part of ISO 9241 provides an introduction to the other parts in the ISO 9241 “300” subseries, andexplains its modular structure. The ISO 9241 “300” subseries establishes requirements for the ergonomicdesign of electronic visual displays. These requirements are stated as performance specifications, aimed atensuring effective and comfortable viewing conditions for users with normal or adjusted-to-normal eyesight.Test methods and metrology, yielding conformance measurements and criteria, are provided for designevaluation.