Sekcja 3itk

• Archetype  -  base class for all [incr Tk] mega-widgets
• itk  -  framework for building mega-widgets in Tcl/Tk
• itkvars  -  variables used by [incr Tk]
• Toplevel  -  base class for mega-widgets in a top-level window
• usual  -  access default option-handling commands for a mega-widget component
• Widget  -  base class for mega-widgets within a frame