Specifies version of ASP.NET this application was compiled under.
Later versions of Cassini Server can run apps for earlier versions of framework. But not hte other way around. For example, Cassini 2.0 will run applications compiled under .NET framework 1.1. But Cassini 1.1 will not run applications compiled for ASP.NET 2.0.
ApplicationEntry Class | CassiniConfiguration Namespace