A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hello Ashwin Kannan
I can see that you are looking for documentation for VML
Documentation for Excel .vml drawing files is available, although it is published under the Open XML / Open Specifications documentation rather than in a single Excel-specific article. Microsoft documents the VML Drawing Part in the Open Specifications for Office, and the related VML content is referenced in the Open XML standards documentation.
Regarding why Excel still writes note or comment position information into a .vml file:
- The published documentation shows that Microsoft still supports the VML Drawing Part in Office file formats, while newer threaded comments can work alongside older legacy comment structures. Because of that, it is still normal to see
.vmlparts in modern Excel workbooks.
You can review a of the related the documentation here:
- VML Drawing Part (Open Specifications)
- VML Drawings reference
- VML namespace in Open XML SDK
- VmlDrawingPart class
- Threaded Comments specification
Feel free reply back to this post if you have any questions or issue, I'll be happy to help.