gnuplots default font size

[Matt Funk]

Sorry to clutter the list with trivial things ...

Is there any way to set gnuplots default font size? 
As discussed in a previous thread i can select the default font via:
putenv ("GNUPLOT_DEFAULT_GDFONT", "/usr/...");

So how do i set its size?

Is there a standard way to interact with gnuplot from an octave script (i.e. 
customize gnuplot settings to my likings). 
Or are these settings documented anywhere so i don't have to bother the list 
with this?


thanks
matt