Space fly forward
mouse steers (click once to capture,
Esc to release, double-click to leave Fly mode)
AD sidestep
S back
E up
Q/C down
Wheel up/down
Shift+wheel left/right
Shift boost keys
+/- speed (120)
T auto tour
F toggle view
R reset

Drag look around
Two fingers drag: up/down and slide
Pinch fly forward/back
Hold ▲ to fly forward, ▼ back
Double-tap leave Fly mode