Source : Free On-Line Dictionary of Computing

Extended Tcl
     
         (TclX) {Tcl} extended by Mark Diekhans
         and Karl Lehenbauer from 1989 on with
        statements to provide high-level access {Unix} system
        primitives.
     
        Current version: 7.6p2, as of 2003-02-12.
     
        {TclX Home (http://www.neosoft.com/tclx/)}.
     
        E-mail: .
     
        (2003-02-12)