idlwave-reserved-word-upcase

idlwave-reserved-word-upcase is a variable defined in `idlwave.el'.
Its value is

nil

Documentation:
Non-nil means, reserved words will be made upper case via abbrev expansion.
If nil case of reserved words is controlled by `idlwave-abbrev-change-case'.
Has effect only if in abbrev-mode.

You can customize this variable.