This is the revision history for perlref in <freenode.net:#perlbot>

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13695 perlref is Perl references and nested data structures - https://perldoc.pl/perlref simcop2387 <*:##NULL>
162 perlref is Perl references and nested data structures - http://perldoc.perl.org/perlref.html perlbot <*:##NULL>