TCL stands for Tool Command Language
Tcl is a scripting language and extending programming language. It is used for rapid prototyping, scripted application. It is used on embedded systems platforms. Tcl can work on Windows, Linux, Mac OS X, as well as other platforms. It is an Open Source Programming language. The combination of TCL and Tcl GUI is called Tcl/Tk.
In TCL programming 'puts' is used in place of print :
puts "Hey, How r u?"