search for: exposuretemp

Dear R-helpers, I have been using \n in my plot titles to split long titles into two lines. I recently tried combining \n and plotmath which still gives me two lines for the title but also a weird blank spacing. A simple example is as follows: plot(1:10, main=expression(paste("Exposure\nTemp (", degree*F, ")"))) Is there something I'm missing to close the spacing.