Pages tagged tcl:

http://www.tcl.tk/doc/scripting.html
http://www.tcl.tk/doc/scripting.html

Article about advantages of scripting languages over system programming languages
Scripting: Higher Level Programming
Scripting languages such as Perl and Tcl represent a very different style of programming than system programming languages such as C or JavaTM. Scripting languages are designed for "gluing" applications; they use typeless approaches to achieve a higher level of programming and more rapid application development than system programming languages. Increases in computer speed and changes in the application mix are making scripting languages more and more important for applications of the future.
TkDocs - Tk Tutorial
http://www.tkdocs.com/tutorial/index.html
Python 3 Tkinter tutorial