https://learn.microsoft.com/en-us/openspecs/office_standards/ms-offstandlp/d5784a8b-7070-466b-befa-b7bf3724c6f0?redirectedfrom=MSDN
[MS-OFFSTANDLP]: Word, Excel, and PowerPoint Standards Support | Microsoft Learn
This documentation contains detailed technical documents for the Open Document Format (ODF) and Open XML (ECMA-376 and
mswordexcelpowerpointstandards