Click the Start icon on the toolbar to initialize all components.
Click Step to step through the project from component to component.
At any point during the simulation, you can preview the current set of data. For example, when the first step executes, the data records are forwarded from the source component to the data calculator. A number on the link indicates the number of records transferred.
Right-click the link and select Preview to preview data on the link.
The Preview option is disabled when there are no processed records or when no simulation data is available.