You can also use the main navigation wheel on the lower right of the device's keyboard to turn pages. (the-ebook-reader.com)
The Cool - ER could use a little polish (and a better four - way navigation wheel) to elevate its usability to the level of its chic appearance. (macworld.com)
The uppermost of these four buttons brings up the MP3 player software and an included Sudoku game (which suffers from its dependence on the stiff navigation wheel and its lack of numeric buttons). (macworld.com)