When you switch to Play mode the last picture captured is displayed full screen with minimal information overlayed, the image quality, the time and date and picture number.

Press the "i"nfo button once to show the extended exposure information

Press the "i"nfo button again to display the histogram chart.

When an image is played back in full screen mode you can go into zoomed playback mode by pressing the zoom control to the telephoto position. The image can be magnified 4x or 8x, once the image is enlarged you can scroll around inside of it using the 4-way selector.