38FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\CLI Folders\Dell ContaxCLI\files\CLI_Preface.fmD E L L C O N F I D E N T I A L – P R E L I M I N A R Y 5 / 1 5 / 1 2 - F O R P R O O F O N LYrecalled, reviewed, modified, and reissued. This buffer is not preserved acrossdevice resets. The keys that can be used to access the history buffer aredescribed in Table 1.By default, the history buffer system is enabled, but it can be disabled at anytime. For information about the command syntax to enable or disable thehistory buffer, see the history command.There is a standard default number of commands that are stored in the buffer.The standard number of 10 commands can be increased to 256. Byconfiguring 0, the effect is the same as disabling the history buffer system. Forinformation about the command syntax for configuring the command historybuffer, see the history size command.To display the history buffer, see show history command.Negating the Effect of CommandsFor many configuration commands, the prefix keyword "no" can be entered tocancel the effect of a command or reset the configuration to the defaultvalue. This guide describes the negation effect for all applicable commands.Command CompletionIf the command entered is incomplete, invalid, or has missing or invalidparameters, an appropriate error message is displayed.To complete an incomplete command, press the button. If thecharacters already entered are not enough for the system to identify a singlematching command, press "?" to display the available commands matchingthe characters already entered.Incorrect or incomplete commands are automatically re-entered next to thecursor. If a parameter must be added, the parameter can be added to the basiccommand already displayed next to the cursor. The following exampleindicates that the command interface requires a missing parameter.(config)#interface%missing mandatory parameter(config)#interface
