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Production Editors shall do their utmost to complete such metadata in case they are missing. Incomplete copy for that matter may be submitted to the journal compositor for styling in order to gain time. In that case the vendor's kindly asked to "author query" for required elements that seem to be missing. An author query is included in a first proof (author proof), labeled with "AQ" in a box.
It must be noted that both Brill and Brill's vendors have access to author data and translated titles in a growing number of cases (though not all!) as these are in Editorial Manager. For journal articles with an automatic transfer to RSuite, such metadata can be found in a JATS file with the copy.
