Hello all, I believe I have a mental block on some issues related to IO and would really appreciate some help on this. I have a text file that contains two columns of numbers, basically X and Y values. I need a function (or set of functions) that reads this file and returns two arrays, one of the X values and one of the Y. A sample data file might look like. 10.0 20.0 20.0 40.0 30.0 60.0 40.0 80.0 Reading in this file should return two arrays [10.0, 20.0, 30.0, 40.0] and [20.0, 40.0, 60.0, 80.0]. Thanks for any help on this, I just don't seem to get IO in Haskell without reassignments. Gordon James Miller Promisemark, Inc. Senior Computer Scientist gmiller@promisemark.com (571)330-9012 The box said "Requires Windows 95 or better." So I installed LINUX