<?xml version="1.0"?> <Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"> <Worksheet ss:Name="Sheet1"> <Table> <Column ss:Width="200"/> <Row> <Cell><Data ss:Type="Number">123.456</Data></Cell> </Row> </Table> </Worksheet> </Workbook>>>At Southwest Fox I'll have a session that covers this format in great detail.