Hm, the installation on my machine is 8.6.6, but I noticed another thing: tclsh and wish do not produce any output unless I use puts explicitly.
[parray tcl_platform] gives:
tcl_platform(byteOrder) = littleEndian
tcl_platform(engine) = Tcl
tcl_platform(machine) = amd64
tcl_platform(os) = Windows NT
tcl_platform(osVersion) = 6.1
tcl_platform(pathSeparator) = ;
tcl_platform(platform) = windows
tcl_platform(pointerSize) = 8
tcl_platform(threaded) = 1
tcl_platform(user) = markus
tcl_platform(wordSize) = 4
Regards,
Arjen