Use the mouse to move and modify structural images.
Place the mouse pointer over the image. Press the mouse button down (left or right button as indicated, for Windows). Press a key down, as indicated (Shift, Ctrl, or Option key).  Drag the mouse in directions shown by the arrows.
Image Action	Windows		Apple
Display popup menus		Hold right mouse button down with pointer stationary.	Hold mouse button down & pointer stationary
X-rotation		Hold left mouse button down & drag mouse.	Hold mouse button down & drag mouse.
Y-rotation		Hold left mouse button down & drag mouse.
Z-rotation		Hold right mouse button & Shift key down & drag mouse.	(none)
X-translation		Right mouse button & Ctrl key down & drag mouse	Hold mouse button & Option key down & drag mouse.
Y-translation		Right mouse button & Ctrl key down & drag mouse.
Z-translation Zoom IN - magnify image		Left mouse button & Shift key down & drag mouse.	Hold mouse button & Shift key down & drag mouse.
Z-translation Zoom OUT- shrink image		Left mouse button & Shift key down & drag mouse.