3 6       zerox zeroy         graph coordinate center
x 0 20   zx min max          (character, real, real) if zx='x' then set xaxis
y 0 20   zy min max          (character, real, real) if zy='y' then set yaxis
20 20 2 2 xinterval yinterval xsubintervals ysubintervals: axis intervals
4 4       xwidth    ywidth    width of numbers in characters
0 0       xdecimal  ydecimal  number of decimal places
15 15     xsize     ysize     size of axes in cm
x class
y class
c         zc                  'c' crosshairs, axXyYnN
n 2       zxl base            if zxl='l' then make x axis log to the given base
n 2       zyl base            if zyl='l' then make y axis log to the given base
          *********************************************************************
1 2 4       xcolumn   ycolumn   columns of xyin that determine plot location
0         symbol column       the xyin column to read symbols from
5  6      xscolumn  yscolumn  columns of xyin that determine the symbol size
8  9 10   hue saturation brightness   columns for color manipulation
          *********************************************************************
R         symbol-to-plot      c(circle)bd(dotted box)x+Ifgpr(rectangle)
i         symbol-flag         character in xyin that indicates that this symbol
-1.0      symbol sizex        side in cm on the x axis of the symbol.
-1.0      symbol sizey        as for the x axis, get size from yscolumn
n         no connection (example for connection is c- 0.05 for dashed 0.05 cm)
n  0.05   linetype  size      linetype l.-in and size of dashes or dots
          *********************************************************************
.
          ****** xyplop.malopt xyplop for malopt