Hello, I am not able to print titles for the y-axis. I am using R version 2.7.1 (I also had this problem with 2.6.1), on OS Redhat Enterprise Linux 5 (64 bit). The following code may be helpful to anyone who can help: #This line does not plot 'test1' plot(1:10,1:10,ylab="test1") #This line does not plot 'test2' mtext("test2",side=2) #This line DOES plot 'test3' mtext("test3",side=1) #This line DOES plot 'test4' mtext("test4",side=1,at=-.1,line=-2) Thanks for any time you might spend with this! Dave. -- _______________________________________ Dave Gregovich Biologist NOAA Southwest Fisheries Science Center La Jolla, CA, USA dave.gregovich at noaa.gov (858)546-7161