| user action | applet reaction |
|---|---|
| dragging (left mouse button pressed) | rotating about an axis in the picture |
| releasing left mouse button while dragging | spinning about an axis in the picture |
| SHIFT key pressed plus vertical dragging | zooming |
| SHIFT key pressed plus horizontal dragging | rotating about an axis perpendicular to the picture |
| CONTROL key pressed plus vertical dragging | changing focal length |
| CONTROL key pressed plus horizontal dragging | changing strength of stereo effect |
| META (ALT) key (or right mouse button) pressed plus vertical dragging | stripping parts of the graphics |
| "o" key | printing parameter settings to the Java console (aka Java messages window) |
| "s" key | toggling between single picture, stereo pictures for diverge fusing and stereo pictures for cross fusing |
| HOME key | restoring original perspective (no spinning) |