Just to note that I have recently updated the Microsoft Windows C# 'app' that allows one to explore various properties of statistical distributions and calculate their Cumulative Distribution Function CDF, Probability Distribution Function PDF, or quantiles/percentiles. This revision includes some new distributions and all the bug fixes and improvements in Boost.Math for 1.52. I have also now aligned the application version numbering with Boost release numbering. For full information and download http://sourceforge.net/projects/distexplorer/ It works on all the 'this-millennium' versions of Windows. If anyone knows how to produce a *nix version, please contact me. Paul --- Paul A. Bristow, Prizet Farmhouse, Kendal LA8 8AB UK +44 1539 561830 07714330204 pbristow@hetp.u-net.com