Please pardon the tendentious subject, but I felt like making a clear statement. ;-) I was wondering: Is there any reason why you would have a function in one of your modules and _not_ export it? I ask because I have _never_ had problems with a module exporting too much, but I have had problems with modules exporting too little quite frequently. The reason why I like purely functional languages like Haskell is that it is virtually impossible to write code that cannot be reused. So why would you exclude other modules from reusing you code? The only reason I could think of is that a function is considered to be "internal", meaning: You don't want users of the module to rely on the function still being there (or still working the same way) in any of the next revisions. On those occasions, however, why not put the function into a module, say "Foo.Bar.Private" and import it into "Foo.Bar" from there? Then those people who enjoy playing with fire _can_ use it, and everybody else will not. Is there something I missed? Peter