This plug-in supports more data source types for Lotus Symphony mail merge, such as: OpenOffice.org 1.1 Spreadsheet (*.sxc), Microsoft Excel 97-2003 (*.xls), Microsoft Excel 2007 (*.xlsx, *.xlsm), OpenDocument Text(*.odt), Web Pages (*.htm, *.html), Tab-separated files (*.tsv, *.tab), dBase (*.dbf) and so on.