in reply to Distinguishing code from not code

If your pod files are editted by you, you can create a pseudo-tag or something else to comunicate your highlitghting engine to not render some chunk of text.
Or use the '=begin' perlpod tag

=begin code command --this --that something =end code

But, maybe, that is not the problem ... right?...

perl -Te 'print map { chr((ord)-((10,20,2,7)[$i++])) } split //,"turo"'