Hello, I'm a computer science research student and we are working on functional languages, esp. graph transformation and data flow languages. Can anybody give me a hint, where I can get information about the intermediate language IF1, IF2 of SISAL or about data flow graphs in general. FTP-site would be best. Does anybody know of a _visual_ data flow language, where one can program in terms of a data flow graph (graphically) instead of a textual program, which only indirectly induces a data flow graph. With regards, Arne Bayer.