ryddler, Thanks for your post. Yeah, what I'm looking to do is label certain points on the graph (like the maximum Y values). I've got the tic labeling figured out. While I'm on this topic...are there any monk recommendations for another graphing module that do a better job at what I'm trying to do? Basically, I'm taking spectra which contain thousands of x, y data points and I just want to do some automated labeling of some of the biggest peaks. Thanks... chinman