GCstar has to be installed in X11 environments, not on native ones.Gzip'ed Tar Files Extract gzip'ed archives with this UNIX command line: gunzip < | tar xvf - Windows The files listed under the Windows sources contain the same information but are in ZIP format. Unix (including Mac OS X) You'll want both Tcl and Tk sources choose the and gzipped tar format.
This archive format was initially created by two software developers to replace file compression program of UNIX.
