//@code
objref g	//Creates an object reference "g" which can be made to
		//point to any object.
g = new Graph()		//Assigns "g" the role of pointing to a Graph instance
			//created from the Graph class, and produces
			//a graph window with x and y axes on the 
			//screen.
g.size(0, 10, -1, 1)	// specify coordinate system for the canvas drawing area
			// numbers refer to xmin, xmax, ymin, ymax respectively
g.beginline()		//The next g.line command will move the drawing pen
			// to the indicated point without drawing anything
for(x=0; x<=10; x=x+0.1){	//States that x values to be plotted
				//will go from 0 to 10 in increments
				//of 0.1.
	g.line(x, sin(x))	//States that the y values on the plot
				//will be the sin of the x values.
}
g.flush()	//Actually draws the plot on the graph in the window.