# set terminal pngcairo  background "#ffffff" enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'fillstyle.4.png'
set boxwidth 0.5 absolute
set style fill   solid 1.00 border lt -1
set samples 25, 25
set noxtics
set noytics
set title "Filled boxes of reduced width" 
set yrange [ 0.00000 : 120.000 ] noreverse nowriteback
plot [-10:10] 100/(1.0+x*x) title 'distribution' with boxes