Golden, August 5, 2009 Dear user, Instead of downloading all the files in the list, we recommend that you download the WinZipped (v. 8.1) file TransPDEDensityFluxV3.zip, which contains * TransPDEDensityFluxV3.m: the source code in Mathematica syntax, a sample notebook, * TransPDEDensityFluxV3.nb: a notebook with a demo of the program for the sine-Gordon system, the various data files, for example, * l_sineSY.m: the data file to run the sine-Gordon equation as a system of first order equations, as well as ALL other data files listed in the menu of the program (and a few extra ones). Instructions for using the TransPDEDensityFluxV3.m program should be obvious based on the menu system. Just execute the commands in the notebook. You need Mathematica v. 5.0 or higher to be able to use the program. Best wishes, Prof. Willy Hereman Department of Mathematical and Computer Sciences Colorado School of Mines Golden, CO 80401-1887, U.S.A. Email: whereman@mines.edu