Under what license(s) are Tcl and such accessories as [Tk], [Expect],
[tcllib], ... available?
Is it possible/practical/easy/... to use Tcl in commercial products?
Is the Tcl license compatible with GPL?


The answers are ...
[[very liberal, and so forth]]







----
The license for the standard Tcl distribution is
http://tcl.activestate.com/software/tcltk/license_terms.html [[purlize this?]].
http://purl.org/tcl/home/software/tcltk/license_terms.html

----
[[lots more details]