Function stop

esp_duck/duckscript.cpp:98–107

    }

    void stop(String fileName) {
        if (fileName.length() == 0) stopAll();
        else {
            if (running && f && (fileName == currentScript())) {
                f.close();
                running = false;
                debugln("Stopped script");
            }
        }
    }

    bool isRunning() {
        return running;