set terminal png
		set output "gnuplot01.png"
		set grid
		set samples 100000
		unset border
        set lmargin at screen 0
		set rmargin at screen 1
		set bmargin at screen 0
		set tmargin at screen 1
		set yrange [-7:10]
		set xrange [-8:8]
		set size 10./10.
		set key center top reverse Left
		set xzeroaxis
		set yzeroaxis
		set ytics axis
		set xtics axis
		#set object circle at 3,3 size 0.2
		set label "(2,0.33)" at 2.1,0.77 tc rgb "#FF0000"	
		plot  1/(x**2 -1) lt rgb "#006300" lw 2 notitle, '-' w p pt 7 ps 1.5 lc rgb "#FF0000" notitle 
		2.0 0.33
		e

		#"<echo '1 2'" with points pt 7 ps 2 #pt = filled circle ps = size