gnuplot 4 では非推奨で、バージョン 5 では削除:
set title "Old" 0,-1
set data linespoints
plot 1 2 4 # y=1 での水平線
TITLE = "New"
set title TITLE offset char 0, char -1
set style data linespoints
plot 1 linetype 2 pointtype 4
if (defined(VARNAME)) ...
set style increment user
plot 'file' thru f(x)
call 'script' 1.23 ABC
(in script: print $0, "$1", "number of args = $#")
if (exists("VARNAME")) ...
set linetype
plot 'file' using 1:(f(column(2)))
call 'script' 1.23 "ABC"
(in script: print ARG1, ARG2, "number of args = ", ARGC