| Name | ID | Description | Type | 
|---|---|---|---|
| IfcMaterialLayerSetUsage | M | IfcMaterialLayerSetUsage | Generic Data | 
| Name | ID | Description | Type | 
|---|---|---|---|
| ForLayerSet | S | ForLayerSet | Generic Data | 
| LayerSetDirection | D | LayerSetDirection | Integer | 
| DirectionSense | S | DirectionSense | Integer | 
| OffsetFromReferenceLine | O | OffsetFromReferenceLine | Number | 
| ReferenceExtent | E | ReferenceExtent | Number | 
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