DonnaMalayeri

@Luna--good point. I should probably have said OO style with C#, rather than just C#. You're right that if I used lambdas in C#, it would have been much more succint. Generally, the OO-style command pattern seems very prevalent, possibly because the language in general is very object-oriented.

Yes, I should have said that the keyword name was inspired by M-Brace.   Our implementation would likely be very different, but I will be sure to mention M-Brace the next time I present!

@Victor: thanks for your interest!  The best place to ask these questions is over at the MSDN F# forum (http://social.msdn.microsoft.com/Forums/en-US/fsharpgeneral/threads). The short answer to your question is that Luca had already defined "grid" in his project. If you want to use these sorts of charting features in your F# programs, check out this blog post (http://blogs.msdn.com/b/fsharpteam/archive/2011/04/15/getting-started-with-fsharpchart.aspx).

Regarding F#, see Don Syme's talk at //build/ for an idea of what's to come.