Here are the commands for a 2009. I don't know if they are the same.
Navigation mode
Destination- go home, address, delete final destination
Map operation - show map, zoom in, zoom out
Guidance Help - repeat guidance, arrow guidance, turn list guidance, turn by turn guidance, resume guidance, stop guidance,
freewat guidance, intersection guidance
screen Preferences - single map, dual map, compass mode
Volume - louder, softer
POI - nearest(American, Chinese, Fast, Italian, French, Japanese, Mexican, Seafood, or other) restaurant, ATM, airport, amusement park,
bank, barber shop, car wash, coffee house, convenuence store, department store, dry cleaning, ferry terminal, gas station, golf course,
grocery store, historical monuments, home and garden, library, parks, pharmacy, post office, restaurant, specialty food store, sports complex,
theater, tourist information, zoo, hide icons
Telephone mode
calling - dial by number, dial by name, dial, cancel
Audio mode
Mode - radio, AM, FM, FM1, FM2, sat, CD changer
Functions - audio on, audio off, next track, previous track, seek up, seek down, next disc, previous disc