[Gnuplot-info] File name problem

[farrokh y. <you...@gm...>]

Hi Authors

When I plot a graph by using gnuplot then there will be file name on top
right of graph.
I mean if I write command {plot "example.data" using 1:2 with lines} then on
top right of graph has been written {"example.data" using 1:2}.
How to vanish or erase it?

Thanks in advance
Farrokh