Grace is a WYSIWYG 2D plotting tool for the X Window System and M*tif, successor of ACE/gr (Xmgr). A few of its features are: * User defined scaling, tick marks, labels, symbols, line styles, colors. * Batch mode for unattended plotting. * Read and write parameters used during a session. * Polynomial regression, splines, running averages, DFT/FFT, cross/auto-correlation. * Exports high-resolution graphics to (E)PS, PDF, MIF, and SVG formats * Supports cross-platform PNM, JPEG and PNG formats While grace has a convenient point-and-click interface, most parameter settings and operations are available through a command line interface (found in Data/Commands).