A Schemeinterpreter blended with Ousterhout' s Tk package by Erick GalleSIo . STk expresses all of Tk as Scheme objects. STk includes a slow CLOS/Dylan-like object-oriented extenSIon. STk almost conforms to R4RS and runs on SunOS 4.1.x and Ultrix/MIPS. Latest verSIon: 4.0.1, as of 2000-09-24. . . (2000-12-16)