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### 4.12 Miscellaneous Options

— User Option: idlwave-help-application

> The external application providing reference help for programming.

— User Option: idlwave-startup-message (`t`)

> Non-`nil` means display a startup message when `idlwave-mode`' is first called.

— User Option: idlwave-mode-hook

> Normal hook. Executed when a buffer is put into `idlwave-mode`.

— User Option: idlwave-load-hook

> Normal hook. Executed when `idlwave.el` is loaded.