Verified answer

L + R + start + select

soft resetting means restarting the game from the title screen without shutting off your DS. This is useful to save time, power, and reduce strain on the ds and gamecard from continually shutting the power on your DS on/off.

To open the start menu just press start. not sure what you were trying to ask there in the description.

up a&b start? i think thats it.