9-175) Enter a command followed by a character string and a ?. All the keywords starting with this stringare listed. display ver?version6) Press Tab after entering the first several letters of a keyword to display the complete keyword,provided these letters can uniquely identify the keyword in this command. If several matches arefound, the complete keyword which is matched first is displayed (the matching rule is: the lettersnext to the input letters are arranged in alphabetic order, and the letter in the first place is matchedfirst.). If you repeatedly press Tab, all the keywords starting with the letter that you enter aredisplayed in cycles.Synchronous Information OutputSynchronous information output refers to the feature that if the user’s input is interrupted by systemoutput, then after the completion of system output the system will display a command line prompt andyour input so far, and you can continue your operations from where you were stopped.You can use the info-center synchronous command to enable synchronous information output. Forthe detailed description of this function, refer to Information Center Configuration in the SystemVolume.Undo Form of a CommandAdding the keyword undo can form an undo command. Almost every configuration command has anundo form. undo commands are generally used to restore the system default, disable a function orcancel a configuration. For example, the info-center enable command is used to enable theinformation center, while the undo info-center enable command is used to disable the informationcenter. (By default, the information center is enabled.)Editing FeaturesThe CLI provides the basic command editing functions and supports multi-line editing. When youexecute a command, the system automatically goes to the next line if the maximum length of thecommand is reached. You cannot press Enter to go to the next line; otherwise, the system willautomatically execute the command. The maximum length of each command is 510 characters. Table9-4 lists these functions.Table 9-4 Edit functionsKey FunctionCommon keys If the editing buffer is not full, insert the character at the positionof the cursor and move the cursor to the right.Backspace Deletes the character to the left of the cursor and move thecursor back one character.Left-arrow key or Ctrl+B The cursor moves one character space to the left.Right-arrow key or Ctrl+F The cursor moves one character space to the right.Up-arrow key or Ctrl+PDown-arrow key or Ctrl+NDisplays history commands
