Describe: Graph is a program that plots mathematical functions and parameter curves in a completely user-defined x,y-axis system. Every graph using standard mathematical functions can be plotted. After plotting, you can read out and zoom at every point in your graph. New to this version are exact differentiating and approximated integration for calculating area, arc-length and revolution volume. With Graph, you transform your Psion into a graphical calculator! Web download graph 40 browsers.