A notebook widget presents the user with several
"pages"; the user can move a page to the top by
selecting its "tab." Each child added to GtkNotebook becomes a page; you can
also specify widgets to use for the tab labels. It is
generally considered bad practice to have more than a
single row of tabs, but
GtkNotebook does allow it. It is also possible to
position the tabs on the left, right, or bottom of the
notebook, but you should always leave them on top for
interface consistency.
