3Com Switch 4800G 24-Port Configuration Manual page 1029

4 Enter a character string followed by a <?>. All the commands starting with this
5 Enter a command followed by a character string and a <?>. All the keywords
6 Press <Tab> after entering the first several letters of a keyword to display the
Synchronous
Information Output
undo Form of a
Command
Edit Features
[Sysname] interface vlan-interface 1 ?
<cr>
[Sysname] interface vlan-interface 1
Where, <cr> indicates that there is no parameter at this position. The command is
then repeated in the next command line and executed if you press <Enter>.
string are displayed.
<Sysname> c?
cd
clock
copy
starting with this string are listed.
<Sysname> display ver?
version
complete keyword, provided these letters can uniquely identify the keyword in this
command.
Synchronous information output refers to the feature that if the user's input is
interrupted by system output, then after the completion of system output the
system will display a command line prompt and your 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. For the detailed description of this function, refer to
"Configuring Synchronous Information Output" on page 1014.
Adding the keyword undo can form an undo command. Almost every
configuration command has the undo form. undo commands are generally used
to restore the system default, disable a function or cancel a configuration. For
example, the info-center enable command is used to enable the information
center, while the undo info-center enable command is used to disable the
information center. (By default, the information center is enabled.)
The CLI provides the basic command edit functions and supports multi-line
editing. The maximum length of each command is 256 characters. Table 83 lists
these functions.
Table 83 Edit functions
Key
Common keys
<Backspace> key
Left-arrow key or <Ctrl+B>
Right-arrow key or <Ctrl+F>
Up-arrow key or <Ctrl+P>
Down-arrow key or <Ctrl+N>
Function
If the editing buffer is not full, insert the character at the
position of the cursor and move the cursor to the right.
Deletes the character to the left of the cursor and move the
cursor back one character.
The cursor moves one character space to the left.
The cursor moves one character space to the right.
Displays history commands
CLI Features 1029