newgraph
xaxis min 0 max 5 
yaxis min 0 nodraw

newcurve marktype box linetype solid label : Line number one
   pts 0 6  1 9  2 11  3 14  4 18 5 20
newcurve marktype triangle linetype dashed color 1 0 0 label : Line number two
   pts 0 3  1 4  2 7  3 9  4 10 5 13
newcurve marktype none linetype dotdotdash color 1 0 1 label : And number three
         pts 0 0  1 2  2 3  3 5  4 6  5 9