idlwave-shell-prefix-key

idlwave-shell-prefix-key is a variable defined in `idlw-shell.el'.
Its value is

""

Documentation:
The prefix key for the debugging map `idlwave-shell-mode-prefix-map'.
This variable must already be set when idlwave-shell.el is loaded.
Setting it in the mode-hook is too late.

You can customize this variable.