That reads like a list of debug statements. It is not a good practice to emit debug statements in production software.

And yet, everybody does it. Our good friends in PHP-land have plenty of well-known applications that emit debug statements in many places, as well. Of course, they are PHP users, and PHP people have a rather narrow mindset(but that is a different story), so that might be acceptable to them.

Users are here to ask/answer/learn about Perl not focus on the markup for the content that was delivered to them.

Notice how you basically ruined the foundation of your suggestion?

By the way, did you know that you could also shorten the class names on the elements using them? For example, instead of .pmsig, we could make it .pms. Oh, we would save so many kilobytes on long threads!