When I use the xyplot function (lattice library) the titles are too long (i.e. part of the title are cut off).  This fixes if I maximize the plot, but I would like the user of the program to not have to manually maximize the plotting window.  I have tried to shrink the main title by using the "par(cex.main=.7)" before the xyplot function, but it seems any prior par options are ignored by xyplot.  There is an option inside xyplot called "par.settings", but I have been unable to figure out how to make it change the main title text size.
 
So, there are 2 possible solutions to my problem: 1) if there a text command to maximize the graphing window, what is it? or 2) how can I change the main title text size in the xyplot function? .  I would appreciate any help.  Thanks so much!
 

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