To keep the browsing of articles simple and thorough, certain formalities are necessary. These formalities come in the way of categories. Categories can be added to a page by adding [[Category:<insert category here>]] to the bottom of a page. The categories used on this site are shaped like an upside down tree, with the root category containing broad categories such as "Category:Character" or "Category:Theme", that branch out into smaller sub-categories in turn. The bottom level are the individual articles ("leaves"). Note that while it's perfectly fine for an article to be in multiple parallel categories at once, (for example being in both the "clop" category and the "Rainbow Dash" category), it is discouraged to have an article be in a category and one of it's subcategories at the same time (for example an article being in the "character" category, as well as in the "Anon" category). If an article fits two non-parallel categories, put it in the one that's more precise!
To create a subcategory, type "Category:<insert category name here>" into the box to the right to receive a link for page creation. Be careful about capital letters! Wikimedia is case sensitive, so it will differentiate between "Rainbow Dash" and "Rainbow dash". The only exception is the first letter of an article or category name, since it will be capitalized automatically. Note that it might be possible that the category you want is not yet created (The category link at the bottom of the page will be red.)
|Character||Which characters are relevant to the article? (Example: "[[category:Pinkie Pie]]")
Last names are by convention part of the category name (for example Twilight Sparkle), while titles are not (for example Celestia instead of Princess Celestia)
|Writefag||Who wrote the story? (Example: "[[category:anywritefag]]")|
|Status||Is the creator still active? Is the story being left unfinished? (Example:"[[category:dead]]")|
|Theme||What is the article about? (Example:"[[category:romance]]")|
|Type||What kind of content is the article about? (Example:"[[category:story]]")|
Please note that the categories' purpose is to make sorting easier. Therefore the question you should ask yourself before you add a category is not Does this article contain xy?, but rather If I were to search for xy, would this article be a relevant search result? Adding categories to a page is like highlighting text: If you highlight everything, you might as well highlight nothing at all.
>Then they marry.
>The other members of the Mane Six congratulate them.
There are exceptions to this rule however, one of which being the Clop category. If a story has a clop scene it belongs there, even if it's just one scene in a large story. The Clopfic category is meant for stories, whose primary purpose is to be used as masturbation material, i.e. cloppy one-shots with little story. Since these categories are non-exclusive, any story that's in the Clopfic category is also by definition in the Clop category.
Another exception would be weird fetishes (weird by /mlp/ standards) or anything that could be considered an unpleasant surprise (for example scat). Articles that contain such things should also always be put in the corresponding category, as well as in the fetish category, even though that would put an article in a category and a subcategory of that category. The reason for that is that I can't manage to make Dynamic Page List filter out subcategories, and that way you can filter out all fetishes, while still being able to search for specific ones.