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[ale] Perl and $_ ?

Okay, I'm just chugging through "Learning Perl" and came to Chapter 6 and
the $_ variable.  I thought I understood it, but now that I'm chugging
through Chapter 7 (Regular Expressions) I'm not so sure.

Could someone explain it to me in their own words with simple examples,

TIA!  :-)

David S. Jackson                           http://www.dsj.net
"You may satisfy all your senses and still not be satisfied."
                        --Edward S. Martin