Move. Drag in any direction with the left mouse button or use the arrow keys. Click a spot to center it.

Orbit. Right-drag in Pan mode, or select Orbit and drag with the left mouse button.

Explore the horizon. Select Horizon and drag left or right to circle the tree. Names stand upright at the branch tips. Move closer with the arrow keys, or click a name to read it up close.

Center the tree. Select Center to bring the tree back to the middle of the screen at the same zoom level.

Read a name. Zoom in with the scroll wheel, or double-click a name to see it from above.

Change height. Use Rise and Descend, or press Page Up and Page Down.

On a touchscreen. Drag with one finger to move. Use two fingers to pan and zoom. Select Orbit to rotate the scene.