| DclSet3DProjection (SCSPRJ) | Seeing through conversion is settled. | 
| DclSet3DEyePoint (SCSEYE) | Set view point of seeing through conversion. | 
| DclSet3DObjectPoint (SCSOBJ) | Set focus of seeing through conversion. | 
| DclSet2DPlane (SCSPLN) | Dvide 2 dimension planes into 3 dimension space. | 
| DclGet3DEyePoint (SCQEYE) | Refer to view point of seeing through conversion. | 
| DclGet3DObjectPoint (SCQOBJ) | Refer to focus of seeing through conversion. | 
| DclGet2DPlane (SCQPLN) | Refer to information of 2 dimension planes that was used to dividing. | 
*The corresponding f77 interface name in parentheses.