The functionality of all graphical objects comes in form of classes, which are subject to possibly multiple inheritance. Windows are described compositionally by means of object hierarchies and are subject to dynamic and interactive modification. DFKI Oz comes with powerful interoperability features. High-level socket functionality is provided through predefined classes, making it straightforward to connect applications written in other languages, possibly running on different computers. Starting and controlling external processes is supported.
Files are available through predefined classes.
Unix functionality is available through a special interface. If DFKI Oz is installed on your system, you can start an interactive Oz demo by typing ozdemo to a shell. By graphical interaction you can play with many interesting demos illustrating different aspects of Oz. The source code of the demos is available through the DFKI Oz programming interface. The first implementation of Oz was operational two years later in September 1992.