tclx
TclX - Extended Tcl
Extended Tcl is a superset of standard Tcl. Extended Tcl has three basic functional areas: A set of new commands, a Tcl shell (a Unix shell-style command line and interactive environment), and a user-extensible library of useful Tcl procedures, any of which can be automatically loaded on the first attempt to execute it. In addition, a detailed help system is available for Tcl/Tk: tclhelp.
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Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.