PowerStore + PowerGallery
Commenting a line with the "//" in front of a line tells the web server to ignore this line of code and not execute it. This is normally used by developpers to put real comments and explanations about the code they wrote so that anyone else looking at it would more easily understand the logic behind the code.
Make sure that you do comment the entire line of code (watch for the word wrapping) with literally just two slashes "//" and the web server will simply bypass that line and ignire it.
Hope this helps.