(13)With regard to UCITS having different share classes, there should be no obligation to produce a separate key investor information document for every such share class, so long as investors’ interests are not compromised. The details of two or more classes may be combined into a single key investor information document only where this can be done without making the document too complicated or crowded. Alternatively, a representative class may be selected, but only in cases where there is sufficient similarity between the classes such that information about the representative class is fair, clear and not misleading as regards the represented class. In determining whether the use of a representative class is fair, clear and not misleading, regard should be had to the characteristics of the UCITS, the nature of the differences represented by each class, and the range of choices on offer to each investor or group of investors.