I decided to stop learning Tcl
I decided to stop learning the Tcl coding language because I found it is too simple. Originally, the reason why I picked Tcl is that I want to use Tk and eventually I found there is a good module Perl:Tk under perl. I played perl very well, and then why not use perl to do the visual Tk part? I will keep learning Tk and wrote note for how to design a cooking calculator, and share my experience with my friends.