# how change the text in \IEEEkeyword

IEEE papers has \IEEEkeyword command, but for other use in other languages. How change the text "Index terms" ?

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I assume you're using the IEEEtran class. You can add \renewcommand\IEEEkeywordsname{Some words} to change that text to Some words.
\documentclass{IEEEtran}