Franz Josef Glacier Click and move the mouse to pan and tilt While panning, use control and shift keys to zoom in and out. Alternatively, use the arrow keys for panning and tilting in fixed increments. Use + and - keys to zoom in fixed increments. Created using PTViewer 2.8, requires Java. This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License.