I have installed most of the Rocket ported software, just for my own use (it’s good to be a sysprog). I am reading up on TCL and using it in learning mode on my Linux desktop. In the book, and on Linux, the TCL scripting command is “tclsh”. In your port, in /tcl-8.5-11/bin there is the command “tclsh8.5” with a symlink to it of “tcl”. I think it would be more consistent with what I’ve seen elsewhere if there were also an symlink of “tclsh”. Of course, in the “UNIX” arena, I am a GNU/Linux aficionado, so I prefer my z/OS UNIX to looks a bit like what I’m used to in Linux.