High Code Java API to Sign, Search, & Verify Digital Signatures within MS Word Excel PowerPoint OpenOffice Images PDF & others. Supports Barcode QR-Code Stamp....Microsoft Excel®: XLSX/XLS/XLSB/XLSM/XLTX/XLT/XLTM OpenOffice Calc®: ODS/OTS...Microsoft Excel®: XLSX/XLS/XLSB/XLSM/XLTX/XLT/XLTM OpenOffice Calc®: ODS/OTS...