Represents the initial value of a switch field, displayed before the user has entered an explicit value.
An unchanging initial value can be assigned to a switch field simply by clicking its handle in Calcapp Creator.
When a field is reset through a reset button, its value is set to the initial value (unless the reset button has been configured to instead assign blank values).
If an initial value is set through a formula, the formula is evaluated just before the screen housing the field is shown. In other words, the formula can reference values of fields that have been shown previously.
If this property is not set, it returns FALSE.