Keyboard controls:

• w, a, s, d - move forward, left, back, right
• r, f - move up, down
• i, j, k, l - look up, turn left, look down, turn right
• O - face origin
• I, J, K, L - orbit down, right, up, left
• x, X, y, Y, z, Z - positive/negative rotations about object's own axis