Provided by: perl-doc_5.22.1-9ubuntu0.9_all 

NAME
perllexwarn - Perl Lexical Warnings
DESCRIPTION
Perl v5.6.0 introduced lexical control over the handling of warnings by category. The "warnings" pragma
generally replaces the command line flag -w. Documentation on the use of lexical warnings, once partly
found in this document, is now found in the warnings documentation.
perl v5.22.1 2020-10-19 PERLLEXWARN(1)