.xlsb file extension
- Excel binary workbook.
A .xlsb file is a saved Excel spreadsheet file, generated with Microsoft Excel 2007 (or later). A .xlsm file allows the use of macros (VBA) in the spreadsheet.
Unlike a .xlsm file a .xlsb file is saved in a binary file format. This makes it smaller and more effcient than the corresponding .xlsm file would be.
For more information see:
- http://everything.explained.at/Microsoft_Excel/ - Microsoft Excel explained.
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