Sudoku Up 2009 includes the Ribbon,
a graphical user interface composed of a
strip across the top of the main playing
area. Ribbon interface is a part of the new
Microsoft Fluent User Interface that
replaces the menus and toolbars used until
the version 2008 of Sudoku Up.
The Ribbon is a way to enhance usability
by consolidating related commands so that
they are easier to find. Commands are
organized into groups
and related groups are organized on tabs.
One need not look through multiple levels of
hierarchical menus.
