This is the revision history for $_ in <*:##NULL>

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13590 $_ is The default variable or "topic". Absolutely lovely for small scripts. sed-ers and awk-o-holics will love it. For mid-size to large modules, use well-meaning variable names, otherwise you will let the Schrödinger's cat out and have crazy bugs. See http://www.modernperlbooks.com/mt/2012/04/defending-against-its-dynamic-scope.html | https://perldoc.pl/variables/$_ grinnz
10794 $_ is The default variable or "topic". Absolutely lovely for small scripts. sed-ers and awk-o-holics will love it. For mid-size to large modules, use well-meaning variable names, otherwise you will let the Schrödinger's cat out and have crazy bugs. See http://www.modernperlbooks.com/mt/2012/04/defending-against-its-dynamic-scope.html preaction
9171 $_ is absolutely lovely for small scripts. sed-ers and awk-o-holics will love it. For mid-size to large modules, use well-meaning variable names, otherwise you will let the Schrödinger's cat out and have crazy bugs. See http://www.modernperlbooks.com/mt/2012/04/defending-against-its-dynamic-scope.html mucker
9170 $_ is absolutely lovely for small scripts. For sed-ers and awk-o-holics will love it. For mid-size to large modules, use well-meaning variable names, otherwise you will let the Schrödinger's cat out and have crazy bugs. See http://www.modernperlbooks.com/mt/2012/04/defending-against-its-dynamic-scope.html mucker