| DclDraw3DLine (SCPLU, SCPLZU) | Draw polygonal line with 3 dimension user coordinates systems. | 
| DclDraw3DLineNormalized (SCPLV, SCPLZV) | Draw polygonal line with 3 dimension regular coordinates systems. | 
| DclSet3DLineIndex (SCSPLI) | Set line index of a polygonal line. | 
| DclGet3DLineIndex (SCQPLI) | Refer to line index of a polygonal line. | 
*The corresponding f77 interface name in parentheses.