-\twocolitem{Window(xmin, ymin, xmax, ymax)}{Set window for world
-coordinates} \twocolitem{MoveAbs(x, y)}{Move graphics cursor}
-\twocolitem{MoveRel(dx, dy)}{} \twocolitem{PointAbs (x, y)}{Plot
-point at current position} \twocolitem{PointRel (dx, dy)}{}
-\twocolitem{LineAbs2 (x, y)}{Draw line from current point to
-point} \twocolitem{LineRel2 (dx, dy)}{} \twocolitem{MarkerAbs2 (x,
-y)}{Draw marker at current position} \twocolitem{MarkerRel2 (dx,
-dy)}{} \twocolitem{PolylineAbs (x[], y[], n)}{Draw a set of lines}
-\twocolitem{PolylineRel (dx[], dy[], n)}{}
-\twocolitem{wc\_to\_ndc(xwc, ywc, xndc, yndc)}{Convert from world
-coord to NDC} \twocolitem{ndc\_to\_wc(xndc, yndc, xwc,
-ywc)}{Convert from NDC to world coord} \twocolitem{DrawText
-(str)}{Draw text string at current positon}
+\twocolitem{\texttt{setWindow(xmin, ymin, xmax, ymax)}}{Set window for world
+coordinates}
+\twocolitem{\texttt{moveAbs(x, y)}}{Move graphics cursor to absolute position}
+\twocolitem{\texttt{moveRel(dx, dy)}}{Move graphics cursor relative to current position}
+\twocolitem{\texttt{pointAbs(x, y)}}{Draw point at current position}
+\twocolitem{\texttt{pointRel(dx, dy)}}{Draw point relative to current position}
+\twocolitem{\texttt{lineAbs(x, y)}}{Draw line from current position to
+absolute position}
+\twocolitem{\texttt{lineRel(dx, dy)}}{Draw line from current position to position
+relative to current position}
+\twocolitem{\texttt{markerAbs(x,y)}}{Draw marker at current position}
+\twocolitem{\texttt{markerRel(dx,dy)}}{Draw marker relative to current position}
+\twocolitem{\texttt{polylineAbs(x[], y[], n)}}{Draw a series of lines to absolute position}
+\twocolitem{\texttt{polylineRel(dx[], dy[], n)}}{Draw series of lines relative to current position}
+\twocolitem{\texttt{drawString(str)}}{Draw text string at current positon}
+\twocolitem{\texttt{drawCircle(r}}{Draw circle at current positon}
+\twocolitem{\texttt{drawArc(r,start,stop)}}{Draw arc with center at current positon}
+\twocolitem{\texttt{drawRect(xmin,ymin,xmax,ymax)}}{Draw rectangle}