In the story it says this,
Kawasaki Traction Control (KTRC) includes three modes: Modes 1 and 2 control ignition timing to prevent wheel slippage in sport riding conditions, while Mode 3 has higher sensitivity and controls ignition timing, fuel and air for ultra-smooth operation. Two power modes operate independently, with full and low (approximately 55% of full with a milder throttle response) options.
Additionally, the Z900 also offers Integrated Riding Modes that link the KTRC and power modes for quick and easy adjustment to suit a giving riding situation. There are four modes, Sport, Road, Rain and Rider (manual).