The content reviews a video demonstration of how to use Simulink model design to generate a PWM (Pulse Width Modulation) signal with variable ON and OFF periods. The process involves using a CLOCK block to receive the time component, then applying a REM (remainder) block to acquire the remainder value from the timer. This value sets the threshold for the switch block, dictating the creation of the desired PWM signal. If viewers need additional help or have suggestions, they can contact the creators through their website or email.