After reading this pdf:
Bash Configuration - Shell dressing
and this bash reference manual
I wanted to find which keys are bound to history-search-backward:
$ bind -P |grep history-search-backward
history-search-backward can be found on "\M-O2A", "\M-O5A", "\M-[1;2A", "\M-[1;3A", "\M-[1;5A", ...
I know that \M means meta and stands for an escape or alt key.
How can i find out what the O2A means? and O5A etc ....