|  | 3.1 | Router User Interface
| 3.1.2 | User mode command list
Typing a question mark (?) at the user mode prompt or the privileged mode prompt displays a handy list of commonly used commands. Notice the " --More--" at the bottom of the sample display. The screen displays 22 lines at one time. So sometimes you will get the -- More -- prompt at the bottom of the display. It indicates that multiple screens are available as output; that is, more commands follow. Here, or anywhere else in Cisco IOS software, whenever a --More-- prompt appears, you can continue viewing the next available screen by pressing the space bar. To display just the next line, press the Return key (or, on some keyboards, the Enter key). Press any other key to return to the prompt. Note: Screen output varies, depending on Cisco IOS software level and router configuration.