tonimark: it works using subframe mechanics. There are good explanations down below. But basically, when you draw something, it uses a particle ID slot that is usually filled by a CLNE(EMBR), which causes the EMBR to have a particle ID much, much later. The EMBR is typically destroyed immediately, but because it doesn't update til later, it gets detected by the sensor.
how does the EMBR sensor work?
sensor is hidden behind the FPS counter
At 30, 19, you can draw something, and draw somewhere else freely without any set-offs.