Ein INZ-Wert genügt dem RESET aber auch...

The RESET operation is used to restore a variable to the value held at the end of the *INIT phase. This value is called the reset value. If there is no *INZSR subroutine, the reset value is the same as the initial value (either the value specified by the INZ{(initial value)}, or the default value). If there is a *INZSR subroutine, the reset value is the value the variable holds when the *INZSR subroutine has completed. - (Quelle)