| DclDrawLine (SGPLU, SGPLZU) | Draw polygonal line with a user coordinates system. | 
| DclDrawLineNormalized (SGPLV, SGPLZV) | Draw polygonal line with a regular coordinates system. | 
| DclDrawLineProjected (SGPLR, SGPLZR) | Draw polygonal line with a seeing through coordinates system. | 
| DclSetLineType (SGSPLT) | Set line type of a polygonal line. | 
| DclSetLineIndex (SGSPLI) | Set line index of a polygonal line. | 
| DclSetLineText (SGSPLC) | Set character string of the label of a polygonal line. | 
| DclSetLineTextSize (SGSPLS) | Set character of the label of a polygonal line high. | 
| DclNextLineText (SGNPLC) | Increase the last character number of the label of a polygonal line. | 
| DclGetLineType (SGWPLT) | Refer to line type of a polygonal line. | 
| DclGetLineIndex (SGQPLI) | Refer to line index of a polygonal line. | 
| DclGetLineText (SGQPLC) | Refer to character string of the label of a polygonal line. | 
| DclGetLineTextSize (SGQPLS) | Refer to character of the label of a polygonal line high. | 
*The corresponding f77 interface name in parentheses.