Ajuda del LibreOffice 25.2
Selects or removes the duplicate rows or columns from the selection. The duplicate records dialog has various options.
Compare: specifies whether to compare rows or columns.
Header: specifies if the selected data includes table headers. If checked, the table headers (the first row or column) are ignored.
Compare by: specifies which fields to compare (and which to ignore) when determining whether two rows or columns are duplicates or not.
Action: specifies whether to select or remove the duplicate rows or columns.