Workbook.Creator property (Excel)
Returns a 32-bit integer that indicates the application in which this object was created. Read-only Long.
expression A variable that represents a Workbook object.
If the object was created in Microsoft Excel, this property returns the string XCEL, which is equivalent to the hexadecimal number 5843454C. The Creator property is designed to be used in Microsoft Excel for the Macintosh, where each application has a four-character creator code. For example, Microsoft Excel has the creator code XCEL.
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