The Tcl language and Tk graphical toolkit are simple and powerful building blocks for custom applications. Thus, you'll find that a command or option probably exists to provide just what you need. Keep this book on your desk as you write scripts, and you'll be able to find almost instantly the particular option you need.
Most chapters consist of alphabetical listings.
Since Tk and mega-widget packages break down commands by widget, the chapters on these topics are organized by widget along with a section of core commands where appropriate.