The Tcl language and the TK toolkit are simple and powerful building blocks for sophisticated applications. This small book is a handy reference guide to the basic Tcl language elements, to the Tcl and Tk commands (presenting each command and its options), and to the Tk widgets.The Tcl/Tk combination is increasingly popular because it lets you produce sophisticated graphical interfaces with a few easy commands, develop and change scripts quickly, and conveniently tie together existing utilities or programming libraries.The Tcl/Tk Pocket Reference, a handy reference guide to the basic Tcl language elements, Tcl and Tk commands, and Tk widgets, is a companion volume to Tcl/Tk in a Nutshell.