<\body> to other platforms> Currently, is supported on most major Unix/X-Window platforms and a Windows port should be ready soon. Nevertheless, your help is appreciated in order to keep the existing ports working. Some remaining challenges for porting are: <\itemize> A native port for MacOS-X. Ports to PDAs, first of all those which run Linux. It should be noticed that, with the current support for , no longer depends on / for its fonts. We expect it to be possible to obtain a reasonable ports for on PDAs with 32Mb and at least 100MHz clock-speed. Of course, one also needs to customize the menus and/or icon bars, but this should not be hard. ports to PDAs would be particularly interesting in combination with the available plug-ins for doing scientific computations. <\initial> <\collection>