In NUBIGON, you can save objects and their configurations, materials, color scales, camera settings, bookmarks, annotations, and camera animations as scenes.
Cross-section planes are not saved as part of scenes. To save the configuration of cross-section planes, create sections from them before saving your scene. Next time you load the scene, launch the Cross Section window and copy from a previosly generated section. New Scene
File > New Scene 
Starts a new, blank scene.
Save Scene
File > Save Scene 
Saves the current scene into a NUBIGON scene file (*.na) (Shortcut: Ctrl+S).
Load Scene
File > Load Scene 
Opens a NUBIGON scene file (*.na) (Shortcut: Ctrl+L).