|  | 5.2 | System Configuration Dialog
| 5.2.1 | Using the setup command
One of the routines for initial configuration is the setup mode. As you've already learned in this lesson, the main purpose of the setup mode is to bring up, quickly, a minimal configuration for any router that cannot find its configuration from some other source. For many of the prompts in the system configuration dialog of the setup command facility, default answers appear in square brackets [ ] following the question. Press the Return key to use these defaults. If the system has been previously configured, the defaults that will appear will be the currently configured values. If you are configuring the system for the first time, the factory defaults will be provided. If there is no factory default, as in the case of passwords, nothing is displayed after the question mark [?]. During the setup process, you can press Control+C at any time to terminate the process and start over. When you complete the configuration process in setup mode, the screen will display the configuration that you have just created. You will then be asked whether you want to use this configuration. If you enter "yes", the configuration will be executed and saved to NVRAM. If you answer "no", the configuration will not be saved and the process will begin again. If a --More-- prompt appears, press the space bar to continue.