how to load an additional file to ghci

Is it possible to load one more module to ghci without unloading the modules I have already loaded? The module I would like to load in addtion is not installed and I do not want it installed. It is also independent of any other modules. There is no dependency from the modules already loaded to the one I would like to add. How to achieve something like "load a module in this file in addition to what I have already loaded and do not modify the the context for expression evaluation (:module) ... just make the exported functions in the file available through fully qualified names". It would be handy for some helper stuff I have which is project independent and too often modified to be installed. Peter.