| Overload | Description | 
|---|---|
| LOCATIONBOX_MAINPLACEMENT | Main placement # 20305. | 
| Overload | Description | 
|---|---|
| LOCATIONBOX_MAINPLACEMENT | Main placement # 20305. | 
Defines the structure box as a main placement to which cross-references refer. This allows the display of cross-references between structure boxes. If the property is not enabled at any box, then the first structure box in the graphic is regarded as the main placement.