Ardunio picture maker?

Hi Everyone,

Just wondering if anyone knows how the cartoon graphics of arduino circuits are made? i'm sure we've all seen them - they look like the fritzing layout editor. Is there some program used to make those?

here's an example of what i'm talking about: http://arduino.cc/en/uploads/Tutorial/BreadboardAVR.png

thanks

fritzing. reference to it is made on the home page if I recall.