GitHub - OfficeDev/Word-Add-in-JavaScript-InvoiceManager: [ARCHIVED] This Word add-in demonstrates how to load data into custom XML parts bound to content controls in a Word document.
![Can't open file that contains custom XML elements which are not supported - Office | Microsoft Learn Can't open file that contains custom XML elements which are not supported - Office | Microsoft Learn](https://learn.microsoft.com/en-us/office/troubleshoot/client/word/media/custom-xml-elements-not-supported/custom-xml-tag.png)
Can't open file that contains custom XML elements which are not supported - Office | Microsoft Learn
![Custom XML Parts in Word Documents | .NET File Format Library - C# & VB.NET | DevExpress Documentation Custom XML Parts in Word Documents | .NET File Format Library - C# & VB.NET | DevExpress Documentation](https://docs.devexpress.com/OfficeFileAPI/images/word-processor-custom-xml-parts-example.png)