I haven't found any way to use optional parameters in a WCF RIA domain service at all. They compile fine on the server-side code, but the generated code that makes it over to the client side contains the parameters as non-optional, as such all of the client code that wants to use the default for the optional parameter fails to compile.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.