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readKeywords() std::vector<std::string> Euclid::Fits::Header::readKeywords ( KeywordCategory  categories = KeywordCategory::All ) const List keywords. Parameters categories The set of selected categories Read or parse keywords or records depending on their categories: mandatory, reserved, user, or comment. Categories can be combined, e.g.: auto categories = KeywordCategory::Reserved | KeywordCategory::User; Example usages: auto keywords = h.readKeywords(~KeywordCategory::Comment); auto keyVals = h.readKeywordValues(); auto header = h.readAll(); auto records = h.parseAll(KeywordCategory::Reserved); where h is a Header. See also KeywordCategory