[Name on requerst] worked for LVNL (LuchtVerkeerleiding Nederland ? Air Traffic Control Netherlands) on an application complex named CCIS. This complex provides information for air traffic control, such as weather reports, runway conditions and availability, radar systems information. The complex works with a broker ? information providers can post their information on topics on the broker, other systems can subscribe to these topics and retrieve information, process it and pass it on ? often display on a large screen. CCIS is largely written in C++ with the help of QT, but also uses XSLT to translate XML messages going through the system. In addition, testing takes place with Robot Framework and Python.