Hi, One thing that seems to keep biting me is strictness in do blocks. What I want to know is the generic way to force an entire String (or other list, perhaps from hGetContents) to be evaluated (read into RAM, I guess) so the underlying file can be closed.... and do it right now. One quick hack that works is hPutStrLn on it, right where I want it to be evaluated. But ugly and not always appropriate. Passing it to some other IO-based functions also works, but again, that doesn't "feel" right. I can always stumble upon things that work, but I'm never sure if I've got 'em right. So, what is the idiomatic way to do this? Most of the documents I see out there on this topic are for usage outside the I/O monad, and I'm not seeing how they apply here. Thanks, -- John