Thanks for the advice monks! Comments were helpful. Athanasius, in regards to your question, it's that client doesn't need to (i.e., the latter). Although, as mentioned, several of the internal classes I'm working on would have little or no value outside of Foo class. Regardless, I'l take advice to document and may utilize the underscore in internal module name that has no value whatsoever outside of Foo. Thanks again!! -Roland.