Click View menu > Dynamic View > Dynamic View to select the 3D view option, which works in one of the following modes:
- Four simple modes: 3D rotation, 2D rotation, zoom, and pan
- One multi-function mode.
You can switch between work modes by selecting the option from the View menu > Dynamic View or from the View toolbar. After choosing a work mode, moving the mouse changes the 3D view:
- 3D Rotation - Rotates a structure in all planes
- 2D Rotation - Rotates a structure in the plane parallel to the screen plane
- Zoom - Changes the magnification of a view
- Pan - Repositions the view of the structure
- Multi-function mode (Rotation / Zoom / Pan) enables work in all modes at the same time. The viewer for the 3D view is divided into the following modes:
Top left: 3D rotation 
Top right: Pan 
Bottom left: Zoom 
Bottom right: 2D rotation. After you position the cursor in the relevant quarter, the cursor changes shape.