I suspect this is a super simple question, but C5 is not respecting comment characters that I put in a php file. I'm editing a view.php file suppress the label "Tags:" from a Problog list block. When I comment out one line using // or # at the beginning of the line, the line turns gray so it *seems* to be commented out:


But then when I save the file and refresh the page, the block using this php actually displays the comment characters like this: // Tags:

What am I doing wrong? If I completely remove the line, things display how I want them to, but I don't want to make a practice of removing code.