css comments
Working with CSS rules quickly—"Style sheets don’t have a particularly fast way to comment a rule out, this tip demonstrates two methods which can be used to add or remove rules without deleting them and without complex comments." Good ideas. I personally would suggestion that you could use TopStyle and quickly comment anything that’s highlighted with Shift+Ctrl+M (which works in CSS and HTML and PHP and probably other languages, giving the proper comment format depending on where you are on the document.) Hitting that keystroke again in the comment will un-comment it.