While pod comments do work, its not especially recommended, and they may be removed in the future. From perlsyn...
Note that pod translators should look at only paragraphs beginning
with a pod directive (it makes parsing easier), whereas the compiler
actually knows to look for pod escapes even in the middle of a
paragraph. This means that the following secret stuff will be
ignored by both the compiler and the translators.
warn "Neither POD nor CODE!?"
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.