myfaces EL support disabled?

I am starter in JSF2.0.

I am using MyFaces.

My little tutorial apps are ok, but I noticed in the logs of MyFaces the 开发者_运维知识库following:

org.apache.myfaces.util.ExternalSpecifications isUnifiedELAvailable INFO: MyFaces Unified EL support disabled

I am not sure what does this actually mean, and also how I could enable it if want to? Via the web.xml?

Thanks

MyFaces 2 will take advantage of JSP EL 2.2 features if they are available; I'm guessing your container provides JSP 2.1.