[Gnuplot-info] png ignores size?

[Ilya E. <ily...@gm...>]

    Hi, folks!
There is gnuplot 4.0 patchlevel 0 under FreeBSD 5.5, installed from ports
with default options.
The picture is created as following:
set term png transparent interlace color giant size 800,600
But actually created picture is 640x480.
Font size (medium, large, giant) is also ignored.
Can somebody explain this?

WBR, Ilya