When you click article link the listing of all articles details appears where you can rate, edit or delete the article if needed.
Article details: The various details of article is available like article posted by, posted on and the content for verification or editing.
Keyword: The keyword is used for searching the articles.
Edit/ update articles: Selecting it from setting option you are able to update various details about the article like change or keyword, allowing the comments etc.
Note: If you have created the sample article for example quick help, but if you deleted it any how then you cannot create the same article with same title or URL name.