Do not forget "Perl Best Practices" Chapter 1. What is really important is that you choose a style that works for you (or your organization) and use it consistently. Consider the advice given in the book, in this forum, or anywhere else, make your own decision, and stick to it. I do admit that even this advice is "do as I say, not as I do". I try to use unnecessary loop labels as documentation, but often forget, or just do not like the added clutter.