V Editor Toolset > Scene Viewpoints
This utility allows you to quickly jump between saved Scene View camera positions through the hotkeys. For example, if you working with your scene objects and UI at the same time you have to manually move the Scene camera to target view and switch between 2D/3D modes. Even if it possible to have two instances of Scene View windows it could be unhandy and time consuming.
- Move your Scene View camera at desired view point
- Save this view point trough Edit > Viewpoint > Save Viewpoint 1 or using [Alt + Shift + 1] hotkey
- Now you may instantly return to this view point at any time trough Edit > Viewpoint > Load Viewpoint 1 or [Shift + 1] hotkey