No Edit Section
Placing __NOEDITSECTION__ at the very top of an Article will prevent the Edit pencil (like above) from being displayed next to every Heading in the Article.
NOTOC Stands for No Table of Contents. Placing __NOTOC__ at the very top of an article (typically after NOEDITIONSECTION) will prevent a Table of Contents from displaying at the top of the article.
Note that in both cases, __ is two (2) Underscores and is required to be placed at both the start and end of the command.