From perlsyn

This means that the following secret stuff will be ignored by both the
+ compiler and the translators.

    $a=3;
    =secret stuff
     warn "Neither POD nor CODE!?"
    =cut back
    print "got $a\n";

You probably shouldn't rely upon the warn() being podded out forever. 
+Not all pod translators are well- behaved in this regard, and perhaps
+ the compiler will become pickier.

One may also use pod directives to quickly comment out a section of co
+de.
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