Search notes:

Excel Object Model: Workbook.CustomDocumentProperties

A workbook's .customDocumentProperties stores all custom document properties of the corresponding workbook.

See also

Via .customDocumentProperties, it is possible to assign an Azure Information Protection label to a workbook, here's an example that does that with Visual Basic for Applications.
workbook.builtinDocumentProperties stores the collection of built-in document properties.
The customProperties property of the worksheet object.

Index

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