How to download and try this example
Usage: pl -gif bullseye.htm -scale 0.7
#proc getdata data: 0 0 #proc areadef rectangle: 1 1 6 6 xrange: -10 10 yrange: -10 10 xaxis.stubs: inc 1 xaxis.grid: color=gray(0.5) yaxis.stubs: inc 1 yaxis.grid: color=gray(0.5) #proc scatterplot xfield: 1 yfield: 1 symbol: shape=nicecircle radius=0.05 style=filled fillcolor=orange #proc scatterplot xfield: 1 yfield: 1 symbol: shape=nicecircle radius=0.8 #proc scatterplot xfield: 1 yfield: 1 symbol: shape=nicecircle radius=1.1 linecolor=red #proc scatterplot xfield: 1 yfield: 1 symbol: shape=nicecircle radius=1.4 linecolor=green #proc scatterplot xfield: 1 yfield: 1 symbol: shape=nicecircle radius=1.7 linecolor=orange #proc scatterplot xfield: 1 yfield: 1 symbol: shape=nicecircle radius=2 linecolor=blue #proc scatterplot xfield: 1 yfield: 1 symbol: shape=nicecircle radius=2.3 linecolor=red