File > Export > Seams saves the selected seam data to a Microsoft Excel workbook. All seam definition types (by intersection, by offset, by 2D sketch, and by table) can be exported. All seam data associated with each definition type are supported, including names, attributes, wireframe coordinates, and boundaries.
The output workbook uses the stiffener import-export format.xls workbook as a template. For more information, see Seam Import Workbook.