Microsoft's new language C# (c-sharp) implements the IEEE-754 floating point standard. There are positive and negative infinities and zeros, NaNs, and arithmetic operations involving these values behave properly. C# also has both multidimensional rectangular and ragged arrays, and combinations thereof. Since a version of Python based on C# will soon be released, (by ActiveState), any Numeric-2 development that doesn't take these accomplishments seriously is in danger of becoming obsolete before it gets documented. The C# language specification is at the web site below (make one line out of it). See, in particular, sections 4.1.5 and 12.1. --Ivan Frohne http://msdn.microsoft.com/library/default.asp?URL=/library/dotnet/csspec/vcl rfcsharpspec_Start.htm