Hi, I used PLOT1 to plot 3 different seismograms on one page. They all have different y values. One goes from -4x10+5 to 4x10+5, while another goes from -10x10+5 to 15x10+5. I would like all three to go from -15x10+5 to 15x10+5. How do I do this? Thanks for the help, Leah