DataColumn.DisplayName Property (Visio)
Specifies the name that appears for the data column on the tab of the parent data recordset in the External Data window in the Microsoft Visio user interface. Read/write.
This Visio object or member is available only to licensed users of Visio Professional 2013.
The DisplayName property value is not necessarily the same as that of the Name property, which is read-only, and which determines the unique identifier of the data column in its parent data recordset.
The value of the DisplayName property corresponds to the value in the Label column in the Shape Data section of the ShapeSheet spreadsheet of a shape that is linked to data. The Label column value determines the label that appears for a particular shape-data item in the Shape Data dialog box for that shape. (Right-click the shape, and then click Shape Data.)
In some previous versions of Visio, Shape Data were called Custom Properties.