In addition to providing some nice-looking interface elements, Tix offers some useful ways to organize the elements that you create. It does this by providing container widgets, which are widgets designed to contain whatever you want to put into them.
Different container widgets have different policies as to how they arrange the widgets inside them. In this chapter, we'll talk about TixNoteBook, which arranges its subwidgets using a notebook metaphor, TixPanedWindow, which arranges its subwidgets in non-overlapping horizontal or vertical panes, and a family of ``Scrolled Widgets'', which attach scrollbars to their subwidgets.