Thread:ThePK/@comment-26061913-20150216000349/@comment-26408630-20150216020130

So, the A to Z category is a common wikia category and, like it says on the page, is used to differentiate pages from redirects and other non-content pages. In fact, I was able to add it to the pages not by adding categories to each and every page, but only by editing the templates which auto-added the category to the page- hence I got no credit towards adding pages to categories.