Options:
起動ディスクのインデックスを作成: OnyX allows you to authorize or prevent the indexing of startup disk with Spotlight.
辞書内を検索: If you disable the search in the Dictionary, no Dictionary definitions will appear in the Spotlight search-results.
計算機を使用: By default, you can make simple calculations in the Spotlight search field in the menu bar. OnyX allows you to enable and disable this function.