# set terminal svg size 600,400 dynamic enhanced font 'arial,10' mousing name "contours_7" butt dashlength 1.0 
# set output 'contours.7.svg'
set key at screen 1, 0.9 right top vertical Right noreverse enhanced autotitle nobox
set style textbox  opaque margins  0.5,  0.5 fc  bgnd noborder linewidth  1.0
set view 60, 30, 1, 1.1
set samples 20, 20
set isosamples 21, 21
set hidden3d back offset 1 trianglepattern 3 undefined 1 altdiagonal bentover
set contour both
set cntrlabel  format '%8.3g' font ',7' start 5 interval 20
set cntrparam levels 10
set style data lines
set title "contours on both base and surface" 
set xlabel "X axis" 
set ylabel "Y axis" 
set zlabel "Z " 
set zlabel  offset character 1, 0, 0 font "" textcolor lt -1 norotate
NO_ANIMATION = 1
splot x**2-y**2 with lines, x**2-y**2 with labels boxed notitle