-Note that depending on the configuration of your system, the sequence
-associated to the M-r key, which is here "C-[r", may differ. To figure
-it out, simply press C-q followed by M-r in the console.
-
-The control character "C-a" puts the cursor to the mostleft location,
-"C-k" erases the current content of the readline buffer, and "C-m"
-simulates the enter key.