In git and snapshots, the "data" argument for "plot" (a series, list or matrix) has now been made optional. This allows use of "plot" for a custom plot that uses formulae rather than a chunk of data. Illustrative example: <hansl> plot literal set title 'CRRA utility' literal set xlabel 'c' literal set ylabel 'u(c)' literal set xrange[1:3] literal set key top left printf "# literal lines = 1" literal crra(x,s) = (x**(1-s) - 1)/(1-s) printf "plot crra(x,0) t 'sigma=0', \\" printf " log(x) t 'sigma=1', \\" printf " crra(x,3) t 'sigma=3" end plot --output=display </hansl> The effect of "# literal lines = 1" is that the crra() function definition will be treated as something to be passed directly to gnuplot, without any attempt at parsing it on gretl's part. So in the gretl GUI we won't choke on that line, and the plot will be GUI-editable. Allin