For example, an existing application consisting entirely of unmanaged functions can be brought to the .NET platform by recompiling just one module with the /clr compiler switch. This module is then able to use .NET features, but remains compatible with the remainder of the application. In this way, an application can be converted to the .NET platform in a gradual, piece-by-piece fashion. It is even possible to decide between managed and unmanaged compilation on a function-by-function basis within the same file (see managed, unmanaged).