Pressing the Playback button brings up the last image captured in full screen mode. This is also what you will see after shooting a picture if the Preview option is enabled.
By pressing the display button you can change the amount and type of information that is displayed about the current photograph. There is also a screen that displays 4 separate histograms for Red Green Blue and Yellow.

Rotating the thumb dial to the left will bring up an index of the pictures on the camera. It starts with a view of 9 thumbnails. Rotating it again will give you 25, and a third time will bring up a calendar, allowing you to select your pictures by the date in which they were taken.

Rotating the thumb dial the other way will allow you to select an image from the index menu, but then it will also allow you to zoom in on an image. The camera will zoom to 2x, 4x, 8x, and 16x. While you are zoomed in you can use the directional buttons to navigate around the photograph.

Play Menu

Slide Show - Runs an in-camera slide show that can be hooked up to a TV for external viewing without a computer
Favorite - On, Off, Cancel
Rotate Display - On or Off
Rotate - Allows you to rotate a picture inside the camera
DPOF Print - Single or Multi
Protect - Single or Multi
Resize - Allows you to resize an image inside the camera
Trimming - Allows you to crop an image inside the camera
Aspect Conversion - 3:2, 4:3

This feature allows you to change the size of the picture from large to medium or small and then gives you the option to save or delete the original file.

The trimming option allows you to crop your image inside the camera. It will save your new picture separately and give you the option to delete the original.