Functions for editing commands

The following commands can be used to edit commands on the command line. The “ESC key sequences” show (for comparison) the shortcuts used on typical VT100/ANSI terminals

Function	Esc key sequences	Description
Up arrow	ESC [A	In the list of commands last run, jumps one position up (in the direction of older commands).
Down arrow	ESC [B	In the list of commands last run, jumps one position down (in the direction of newer commands).
Right arrow	Ctrl-F ESC [C	Moves the insert cursor one position to the right.
Left arrow	Ctrl-B ESC [D	Moves the insert cursor one position to the left.
Home or Pos1	Ctrl-A ESC [A ESC [1˜ (	Moves the insert cursor to the first character in the line.
End	Ctrl-E ESC [F ESC OF ESC [4˜	Moves the insert cursor to the last character in the line.
Ins	ESC [ ESC [2˜	Switches between input and overwrite modes.
Del	Ctrl-D ESC <BS>ESC [3˜	Deletes the character at the current position of the insert cursor or ends the Telnet session if the line is blank.
erase	<BS><DEL>	Deletes the next character to the left of the insert cursor.
erase-bol	Ctrl-U	Deletes all characters to the left of the insert cursor.
erase-eol	Ctrl-K	Deletes all characters to the right of the insert cursor.
Tabulator		Completes the input from the current position of the insert cursor for a command or path of the LCOS menu structure: If there is only one possibility of completing the command/path, this is accepted by the line. If there is more than one possibility of completing the command/path, this is indicated by an audible sound when pressing the Tab key. Pressing the Tab key again displays a list of all possibilities to complete the entry. Then enter another character, for example, to allow unambiguous completion of the input. If there is no possibility of completing the command/path, this is indicated by an audible sound when pressing the Tab key. No further actions are run.