idlwave-shell-comint-settings

idlwave-shell-comint-settings is a variable defined in `idlw-shell.el'.
Its value is

((comint-scroll-to-bottom-on-input . t)
 (comint-scroll-to-bottom-on-output . t)
 (comint-scroll-show-maximum-output)
 (comint-prompt-read-only . t))

Documentation:
Alist of special settings for the comint variables in the IDLWAVE Shell.
Each entry is a cons cell with the name of a variable and a value.
The function `idlwave-shell-mode' will make local variables out of each entry.
Changes to this variable will only be active when the shell buffer is
newly created.

You can customize this variable.