Press space to spawn the dots. Holding down the mouse gives an effect depending on what tool you have selected. Press letters to change tools. The tools are: "M" Magnet The dots will cluster around your mouse. "T" Turn The dots will turn 90 degrees. "R" Reverse The dots turn 180 degrees. (buggy) "L" Lock While on, it has the effect of holding down the mouse. (very, very, VERY buggy)