You can either work in Compatibility Mode or you can convert your document to the Word 2016 or Word 2013 file format. The Word Convert command clears the compatibility options so that the document layout appears as it would if it had been created in Word 2016 or Word 2013.
You can either work in Compatibility Mode or you can convert your document to the Word 2010 file format. The Word Convert command clears the compatibility options so that the document layout appears as it would if it had been created in Word 2010.
To open a file that was created in another file format, either in an earlier version of Excel or in another program, click File > Open. If you open an Excel 97-2003 workbook, it automatically opens in Compatibility Mode. To take advantage of the new features of Excel 2010, you can save the workbook to an Excel 2010 file format. However, you also have the option to continue to work in Compatibility Mode, which retains the original file format for backward compatibility.
The XML-based and macro-enabled Add-In format for Excel 2010 and Excel 2007. An Add-In is a supplemental program that is designed to run additional code. Supports the use of VBA projects and Excel 4.0 macro sheets (.xlm).
OpenDocument Spreadsheet. You can save Excel 2010 files so they can be opened in spreadsheet applications that use the OpenDocument Spreadsheet format, such as Google Docs and OpenOffice.org Calc. You can also open spreadsheets in the .ods format in Excel 2010. Formatting might be lost when saving and opening .ods files.
Portable Document Format (PDF). This file format preserves document formatting and enables file sharing. When the PDF format file is viewed online or printed, it retains the format that you intended. Data in the file cannot be easily changed. The PDF format is also useful for documents that will be reproduced by using commercial printing methods.