<Verb>ScatterPlot(L):: List --> Void</Verb><P/>

<P/> Inputs a list  <M>L=[[x_1,y_1],\ldots, [x_n,y_n]]</M> of pairs of 
rational numbers and displays a scatter plot of the points in the 
<M>x</M>-<M>y</M>-plane. 


