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   use sanity qw(strict warnings mro/dfs feature IO::File IO::Handle);

   # ...these statements
   use strict;
   use warnings;
   use mro 'dfs';
   use feature ':all';
   use IO::File;
   use IO::Handle;</pre>

<p>Basically, it does the same thing as the meta pragma <a href="http://search.cpan.org/perldoc?Modern%3A%3APerl" class="podlinkpod"
>Modern::Perl</a>, except you actually don&#39;t need that module for it to work. While there is some magic to make sure, say, <code>feature</code> gets loaded with various versions of Perl, it typically just works using a standard <code>import</code...

<h3><a class='u'
name="Negating_flags/aliases"
>Negating flags/aliases</a></h3>

<p>You can turn off flags in the statement:</p>

<pre>   use sanity qw(Modern::Perl -mro/dfs);</pre>