Samsung NX100 - Auto Rotate; Highlight

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Playback/Editing > View photos
Highlight
This function identifies the parts of a photo that are excessively bright.
When you view a photo with highlight on, the excessively bright areas of
the photo blink in blue.
Original Highlighted
To set highlight
options,
In Playback mode, press [m]  x  Highlight 
an option.
Auto Rotate
With Auto Rotate on, the camera automatically rotates photos you have
taken vertically so they fit the screen horizontally.
To set auto rotate
options,
In Playback mode, press [m]  x  Auto Rotate 
an option.