3Com WX3000 Series Operation Manual page 17

Table 1-5 Edit operations
Press...
A common key
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
Tab
Insert the corresponding character at the cursor position and move
the cursor one character to the right if the command is shorter than
254 characters.
Delete the character on the left of the cursor and move the cursor
one character to the left.
Move the cursor one character to the left.
Move the cursor one character to the right.
Display history commands.
Use the partial online help. That is, when you input an incomplete
keyword and press Tab, if the input parameter uniquely identifies a
complete keyword, the system substitutes the complete keyword for
the input parameter; if more than one keywords match the input
parameter, you can display them one by one (in complete form) by
pressing Tab repeatedly; if no keyword matches the input
parameter, the system displays your original input on a new line
without any change.
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