In the third step, the zones are defined.
Here it is determined which action and which feedback each function has.
Examples:
A button is an IN zone with Feedback = TRUE when pressed.
A cylinder is an IN_OUT zone with actions "Extend" and "Retract" and feedbacks "Front" and "Rear".
A calculation function is an IN_OUT zone with action "Start" and feedback "Done".
Each of these zones is linked in the SEQ via the operands (S, I, M, 0) in the states.
This creates a complete control behavior — from clearly defined building blocks.
