ISO/IEC 29341-4-13:2008(E) provides control points with the ability to query and/or adjust any rendering attribute that the device supports, such as control characteristics (e.g. brightness and contrast) and audio characteristics (e.g. volume, balance and equalizer settings). The series of ISO/IEC 29341 publications defines an architecture for pervasive peer-to-peer network connectivity of intelligent appliances, wireless devices and PCs. It is designed to bring easy to use, flexible, standards-based connectivity to ad-hoc or unmanaged networks whether in the home, in a small business, public spaces or attached to the Internet.