draw lines
elines(xData,yData[,lineWidth[,dash[,color]]])
xData :
matrix(2xn) of x0,x1-data of lines
yData :
matrix(2xn) of y0,y1-data of lines
lineWidth :
width of lines
default: lineWidth=eLineWidth
dash :
if dash=0 then draw solid lines
else value of dash is the distance of dashes
default: dash=eLineDash
if a vector with size 1xn, then dash describes
a dash combination [space lineLength1 lineLength2 ...]
color :
vector of line color ([r g b])
default: color=eLineColor