When activated, the Waveform displays the current values of selected elements, the current time and current step number. When a new element is added to the Waveform, its current value is immediately displayed.
As simulation continues to run, the waveform displays a full history of element changes. To view the value of the elements, click at the desired point of the Step/Time scale. The elements at that point are displayed in the Value area of the waveform