With spplot how to control panel font size?

All:

I am using spplot to automatically generate a 21-panel eps graphic 
within a script where the titles for the individual panes are too large 
and they get cut-off at the beginning and end of the string. I have not 
been able to find how to fix the font size so the titles will fit. I've 
tried setting the the dimensions of the graphic, but that does not seem 
to have an effect. I have searched and can not find any examples of how 
this can be done?

Regards,
Tom

Thomas E Adams
National Weather Service
Ohio River Forecast Center
1901 South State Route 134
Wilmington, OH 45177

EMAIL:	thomas.adams at noaa.gov

VOICE:	937-383-0528
FAX:	937-383-0033