This section is where the lines in the cash flow are programmatically defined. Select the rule that defines a cash flow in the "Cash flow rule" column. Change the numerical parameters that the rule uses in the "Amount," "Base," and "Growth Factor" columns. The values that will appear in the cash flow based on the rule and parameters selected are shown in the "Periodic Value" column. This table is only a sampling of what could be done with rule-based cash flow definitions.