Visual Studio 2012 Strange Signal Icon

Question

I have a class in a VS 2012 project whose signal icon is a black diamond (image below).

I am not familiar with this icon and it is not listed in the VS 2012 Class View and Object Browser Icons page on msdn. Anyone have an idea what this icon means?

I was initially having some problems with the class resolving incorrectly and giving a build error that I have resolved...I initially assumed this was some kind of error signal, however the icon stayed after I got a successful build of the project.

I am also using JetBrains ReSharper 7.1 C# Edition Build 7.1.25.234 on 2012-11-14T00:34:00, but I can't find any injected icons on their website either.

Answer 1

The icon with the black diamond means that this is a static class (the following screen shows the static class System.Linq.Enumerable).

Btw, ... the icon with the "A" means that this is an abstract class.