font size for xlab

Hi

I am trying to set the xlab font size.  I have this code:

attach(errorsBySpeakers)

postscript("pic2.ps",width=4,height=4,paper="A4",horizontal=FALSE,pointsize=
0,family="Times")

plot(prattpercent,uttspercent, xlab="Testing")

abline(z)

dev.off()

detach(errorsBySpeakers)

but I cannot find the correct form of words to make the xlab "Testing"  as a
size 11 font.  Does anyone know the wording?  Also for ylab.

Thanks

Stephen Choularton

02 9999 2226

0413 545 182

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