Andrew Mcelroy wrote in post #959869:

> Checkout DrX  http://drx.rubyforge.org/
> It might visually show you what's going on.

This looks like a very interesting and useful tool.  I got an answer 
before I succeeded in installing it (since it seems that I need a C 
development package on my system to install it -- I'm running Windows 
7), but I'm going to proceed with installing anyway.

Thanks!

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