intable,s,a,"",,,"input tables"
outtable,s,a,"STDOUT",,,"output tables or STDOUT"
xcol,s,a,"",,,"x column in input tables"
ycol,s,a,"",,,"y column in input tables"
wcol,s,h,"",,,"weight column in input tables"
scol,s,h,"",,,"standard deviation column in input tables"
rows,s,h,"-",,,"range of rows to use for fit"
outcoly,s,h,"yfit",,,"column name for fitted y values"
outcolr,s,h,"yres",,,"column name for residual values"
mode,s,h,"al"