# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'fillstyle.7.png'
set boxwidth 0.5 absolute
set style fill   pattern 0 border
set samples 11, 11
unset xtics
unset ytics
set title "A demonstration of boxes in mono with style fill pattern" 
set yrange [ 0.00000 : 120.000 ] noreverse
NO_ANIMATION = 1
plot [-2.5:4.5] 100/(1.0+x*x) title 'pattern 0' with boxes lt -1,                  80/(1.0+x*x) title 'pattern 1' with boxes lt -1,                  40/(1.0+x*x) title 'pattern 2' with boxes lt -1,                  20/(1.0+x*x) title 'pattern 3' with boxes lt -1