-V, --version
    -h, --help
    -p  --persist
    -d  --default-settings
    -s  --slow
    -e  "command1; command2; ..."
    -c  scriptfile ARG1 ARG2 ...
-p tells the program not to close any remaining interactive plot windows when the program exits.
-d tells the program not to execute any private or system initialization
(see initialization (p. 
)).
-s tells the program to wait for slow font initialization on startup. Otherwise it prints an error and continues with bad font metrics.
-e "command" tells gnuplot to execute that single command before continuing.
-c is equivalent to -e "call scriptfile ARG1 ARG2 ...". See call (p. 
).