1. When you
load a 2D file, it automatically appears in the 2D viewer.
2. If you are viewing a 3D model and want to switch to a 2D drawing that is already loaded, click 3D Access and then, in the Window group, click Annotation.
To see a 3D model:
1. If you are viewing a 2D drawing, click 3D Access to switch to your 3D view.