set title 'Energy per atom vs. time' \n\
set xlabel 'Time [fs]' \n\
set ylabel 'Energy per atom [eV]' \n\
-set terminal postscript eps enhanced color dashed lw 1 'Helvetica' 14 \n\
+set terminal postscript eps enhanced color solid lw 1 'Helvetica' 14 \n\
set output 'energy.eps' \n\
plot \"energy\" using 1:2 title 'Kinetic energy' with lines , \"energy\" using 1:3 title 'Potential energy' with lines , \"energy\" using 1:4 title 'Total energy' with lines\
";