# set terminal png transparent nocrop enhanced font arial 8 size 420,320 
# set output 'simple.6.png'
set key right below Right noreverse noinvert enhanced box linetype -1 linewidth 1.000 samplen 4 spacing 1 width 0 height 0 autotitles
set samples 400, 400
plot [-5*pi:5*pi] [-5:5] real(tan(x)/atan(x)), 1/x