3Com 5500G-EI Command Reference Guide - Page 20

20 ABOUT THIS GUIDE ■ Using System Management Commands - Introduces the commands used for system management and maintenance. Intended Readership The manual is intended for the following readers: ■ Network administrators ■ Network engineers ■ Users who are familiar with the basics of networking Conventions This manual uses the following conventions: Table 1 Icons Icon Notice Type Description Information note Information that describes important features or instructions. Caution Warning Information that alerts you to potential loss of data or potential damage to an application, system, or device. Information that alerts you to potential personal injury. Table 2 Text conventions Convention Description Screen displays This typeface represents text as it appears on the screen. Keyboard key names If you must press two or more keys simultaneously, the key names are linked with a plus sign (+), for example: Press Ctrl+Alt+Del The words "enter" and "type" When you see the word "enter" in this guide, you must type something, and then press Return or Enter. Do not press Return or Enter when an instruction simply says "type." Fixed command text This typeface indicates the fixed part of a command text. You must type the command, or this part of the command, exactly as shown, and press Return or Enter when you are ready to enter the command. Example: The command display history-command must be entered exactly as shown. Variable command text This typeface indicates the variable part of a command text. You must type a value here, and press Return or Enter when you are ready to enter the command. Example: in the command super level , a value in the range 0 to 3 must be entered in the position indicated by level { x | y | ... } Alternative items, one of which must be entered, are grouped in braces and separated by vertical bars. You must select and enter one of the items. Example: in the command flow-control {hardware | none | software}, the braces and the vertical bars combined indicate that you must enter one of the parameters. Enter either hardware, or none, or software.