ACKNOWLEDGEMENT I gratefully acknowledge the authors of the following functions that I have used in SeisLab. Juan Cantillo for the improvement of function "ibm2single", used to convert IBM format to single-precision IEEE format; it allows significantly larger datasets to be read. Primoz Cermelj for advexpfig.m (save figures) http://www.mathworks.com/matlabcentral/fileexchange/9132 Steven L. Eddins for function "linewrap" http://www.mathworks.com/matlabcentral/fileexchange/9909 Brian Farrelly for "ibm2double", the functions used to convert IBM format to double-precision IEEE format. Jiri Doke for showcell (display contents of cell arrys) http://www.mathworks.com/matlabcentral/fileexchange/9776 Winston Smith for vnorm (vector norm along a specified matrix dimension) http://www.mathworks.com/matlabcentral/fileexchange/10708 Malcolm Wood (The MathWorks) for ple.m (print last error) http://www.mathworks.com/matlabcentral/fileexchange/9525