I just discovered a little easter egg.

I created a subtractor and was trying to move it, and instead i ended up clicking and dragging one of the screws instead, and you can actually screw/unscrew (to the point of them falling out, the subtrator stays in place though) the four screws in the corners of the synth.

Try it out. create a subtractor synth. move the mouse over a screw and click and drag upwards.