There are three types of main windows in NeuTu:
Home Window: The foremost window of the application. It is mainly used to launch a new proofreading window.
Proofreading Window: Each proofreading corresponds to one proofreading session. The main view shows proofreading data slice by slice on the XY plane.
3D Window: 3D windows are usually launched from the proofreading window to show proofreading data in 3D visualization.