Is there any way to show classes as residing in different "layers" in a visual studio class diagram?

I am adding class diagram to try to improve navigation to various files in a subproject within a large solution. The sub project spans several visual studio projects. I basically am wondering if there is native functionality or an addin of some sort that allows me to layer the diagram such that I can seperate the Domain model, entities, etc. into their own area visually. This is purely an aesthetic/diagram need. 开发者_StackOverflow社区I don't need any functionality just something that visual indicates what layer the class is in.