This mode is for taking pictures of people at sunset or at night. It uses flash to illuminate the subject and a slow shutter speed to expose the background, resulting in a natural-looking exposure.
Set the Mode Dial to <>.
The way you take pictures is the same as in < > (Full Auto) mode.
The AF mode is automatically set to <ONE SHOT>, the drive mode to <> (Single-frame), and the metering mode to <>.