Use Excel with earlier versions of Excel - Microsoft Support
https://support.microsoft.com/en-us/office/use-excel-with-earlier-versions-of-excel-2fd9ffcb-6fce-485b-85af-fecfd651a5ac
To make sure that an Excel 2007 or later workbook does not have compatibility issues that cause a significant loss of functionality or a minor loss of fidelity in an ea… The file format of compatibility mode
To make sure that an Excel 2007 or later workbook does not have compatibility issues that cause a significant loss of functionality or a minor loss of fidelity in an ea…
The file format of compatibility mode
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