The automatic prompting feature allows the system to recognize partial commands. Instead of typing the entire command, automated prompting allows you to type only as many characters as is necessary to identify the desired command. You must enter enough characters to uniquely define the command. For instance, the Passport 4400 unit will not recognize the letter "s", because the command could be the command verb save, set, or show. When you enter the letters "sh", the Passport 4400 unit will recognize the command verb show and respond with the next level of options.