I want to look at the actual code behind many of the commands in Tcl,
https://www.tcl.tk/man/tcl8.6/TclCmd/contents.htm
Is this possible? For example, if I wanted to look at the "foreach" command to see how it works in Tcl code, can I find that in my Tcl file downloaded from ActiveState?
The Tcl/Tk source can be downloaded here: Tcl/Tk Software Download