| clrscr | Clears the display screen | 
                  
                     | commit | Commits (saves) changes made in the current session | 
                  
                     | exit | Ends and exits the current mode. In the Global cnfiguration mode, this
                        command and moves to the PRIV EXEC mode. | 
                  
                     | help | Displays the interactive help system | 
                  
                     | no | Negates a command or reverts values to their default settings | 
                  
                     | revert | Reverts changes to their last saved configuration | 
                  
                     | service | Invokes service commands to troubleshoot or debug (config-if) instance
                        configurations | 
                  
                     | show | Displays running system information | 
                  
                     | write | Writes the system's running configuration to memory or terminal |