6.2 How can I access command line history?
[B]Alt-h[/B] shows the last commands you executed from the command line.
Duplicates are suppressed from the history. Commands executed from
the subshell prompt are not shown.
You can put previous commands to the command line with Alt-p. Alt-n
moves you forward in history.
Since version 4.1.15 all the input widgets have permanent history.
You can summon the history listbox by pressing [B]M-h[/B].