New to NX design includes additional functionality and enhancements into core design. Feature snapshots provides a visual comparison of a design change which will greatly improve your understanding and impact of a change made.
The snapshot creates a copy of a body for visual comparison of design changes.
The snapshot window enables comparing the model side by side with the option to synchronize view manipulations
Snapshot can be overlaid on top of the updated geometry and inspected using a translucency slider
Snapshots are temporarily stored in the Snapshot Node in the Part Navigator
See here for a video demonstration on this functionality.