-\twocolitem{initgrf2}{Initialize 2 dimensional graphics}
-\twocolitem{termgrf2}{Terminate 2 dimensional graphics}
-\twocolitem{setColor(color)}{Set current drawing color}
-\twocolitem{setLinestyle (style)}{Set current line style}
-\twocolitem{setLinewidth (width)}{Set current line width}
-\twocolitem{setTextColor (foreground, background)}{If back=-1,
-then transparent} \twocolitem{setMarker (type, color)}{Set marker
-attibutes}
+\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}