Board Thread:Support Requests - Getting Technical/@comment-3032314-20140716195717/@comment-2170536-20140717002546

The times I have seen these used are when CSS/Javascript pages aren't in the MediaWiki: namespace. Most of the code on the Wiki Developer's Wiki falls into this category. The commented-out tags allows the pages to be displayed properly as code when viewing them (because the viewer ignores the comment marks, the tags are used to format the output), but the code itself will still work (because JS/CSS honors the comment marks and therefore ignores the tags).