> It has a pickaxe on the cover (print version, at least).  Learning
> this is one of the Ruby rites of passage :-)

<dawning_comprehension> OOOOhhhhhh! </>
Now I get it.  On-line the background depics pickaxe.  :-)

At least I figured what book it was, even if I didn't realize why. :-)

Cheers,
Daniel.