1.3.6 SpreadsheetML Drawing

ActiveX control objects, Embedded Object Linking and Embedding (OLE) and form control embedded objects in SpreadsheetML are each associated with a shape in DrawingML. The shape in DrawingML is a placeholder that specifies the position of the embedded object in the worksheet drawing tree that in turn specifies the embedded object z-order and grouping information in relation to other drawing objects.

Visible text and visible text-related properties of form control embedded objects are specified by the txBody element of the placeholder shape. For more information, see [ISO/IEC29500-1:2016] section 20.5.2.34.

An implementing application can replace this shape with any other placeholder shape when saving.