Operation Manual – System Maintaining and DebuggingH3C S3610&S5510 Series Ethernet Switches Chapter 1 Basic Configurations1-14Follow these steps to access history commands:To do… Use the key/command… ResultView the historycommandsdisplayhistory-commandDisplays the commandsthat you have enteredAccess the previoushistory command Up-arrow key or Displays the earlierhistory command, if thereis any.Access the next historycommandDown-arrow key orDisplays the next historycommand, if there is any.Note:You may use arrow keys to access history commands in Windows 200X and XPTerminal or Telnet. However, the up-arrow and down-arrow keys are invalid inWindows 9X HyperTerminal, because they are defined in a different way. You can use and instead.1.2.5 Command Line Error InformationThe commands are executed only if they have no syntax error. Otherwise, errorinformation is reported. Table 1-5 lists some common errors.Table 1-5 Common command line errorsError information CauseThe command was not found.The keyword was not found.Parameter type error% Unrecognized command found at '^'position.The parameter value is beyond theallowed range.% Incomplete command found at '^'position. Incomplete command% Ambiguous command found at '^'position. Ambiguous command,Too many parameters Too many parameters% Wrong parameter found at '^' position. Wrong parameter