Meh... the explicit instruction of adding the opening PHP tag seems a little silly to me, especially when it begins with a class declaration, `namespace`, or `uses`, etc.  If you can't grok that in an "make a file look like" example, chances are you are going to trip over yourself in everything else too -- including PHP itself -- which teaching the fundamentals of PHP isn't the objective of CakePHP's documentation.  At minimum, I'd rather change these instances' wording to not say "make it look like this."