PsppireDialogAction *pda = PSPPIRE_DIALOG_ACTION (a);
PsppireDialogActionChisquare *act = PSPPIRE_DIALOG_ACTION_CHISQUARE (a);
PsppireDialogAction *pda = PSPPIRE_DIALOG_ACTION (a);
PsppireDialogActionChisquare *act = PSPPIRE_DIALOG_ACTION_CHISQUARE (a);