3 6       zerox zeroy         graph coordinate center
x -20 20  zx min max          (character, real, real) if zx='x' then set xaxis
y -20 20  zy min max          (character, real, real) if zy='y' then set yaxis
20 20 2 2 xinterval yinterval xsubintervals ysubintervals: axis intervals
3 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
y
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
          *********************************************************************
3 4       xcolumn   ycolumn   columns of xyin that determine plot location
1         symbol column       the xyin column to read symbols from
5  6      xscolumn  yscolumn  columns of xyin that determine the symbol size
13 11 16  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         connection size     connect these symbols with lines
n  0.125  linetype  size      linetype il.-in and size of dashes or dots
          *********************************************************************
.
          **** version 8.50 of xyplop: uses cm for distances * xyplop.diana.color
l +1 0 0.125  User defined line
l -1 0 0.125  User defined line