IEC 62023:2011 provides rules for applying a method of structuring technical information and documentation by using a main document (leading document) for the clustering of the information for each object. This second edition cancels and replaces the first edition of IEC 62023 published in 2000. This edition constitutes a technical revision. It includes the following substantial changes with respect to the previous edition: - the terminology used in the publication has been adapted to the one used in IEC 81346-1:2009 and IEC 62507-1:2010; - the figures have been adapted to the principles used in IEC 81346-1:2009 in order to better illustrate the interrelations between the standards; - the examples in the annexes have been provided with comments. The contents of the corrigendum of February 2012 have been included in this copy.