confirm_abort_experiment

    def confirm_abort_experiment(self):
        """
        Asks for confirmation before aborting the experiment.
        Displays a confirmation screen, collects the response, and acts accordingly

        Raises a response_error upon confirmation

        """
        # Display the confirmation screen
        yc = self.my_canvas.ycenter()
        ld = 40
        self.my_canvas.clear()
        self.my_canvas.text("Really Abort experiment?", y = yc - 3 * ld)
        self.my_canvas.text("Hit 'Y' to abort, ", y = yc - 0.5 * ld)
        self.my_canvas.text("Hit any other key or wait 5s to go to setup, ", y = yc + 0.5 * ld)
        self.my_canvas.show()

        # process the response:
        try:
            key, time = self.my_keyboard.get_key(timeout = 5000)
        except:
            self.setup_cal_display()
            return

        # if confirmation, close experiment
        if key == 'y':
            raise openexp.exceptions.response_error( \
                            "The experiment was aborted")
        else:
            self.setup_cal_display()
            return