Arrow keys control the man's left arm and elbow. WASD keys control the man's right arm and elbow. K and L keys control his legs. M hides or displays the matrix and circle. E turns sound effects on or off. Space changes the backdrop. C changes the color.
The proportions of the figure are based on Leonardo da Vinci's Vitruvian Man drawing. https://en.wikipedia.org/wiki/Vitruvian_Man
