Filename Macro

[rbl...@gmail.com]

Let's say I feed gnuplot a command file, like this:

>gnuplot plotit.gp

Is there a variable or macro that holds the string or value
"plotit.gp"? I would like to put it in small text as a label in the
lower corner. I know how to generate and place a lable, I just want
to know if I can get the filename automatically.

Thanks in advance.