Wikipedia:Tip of the day/November 1, 2007
Appearance
How to enable right-click section editing
Click the my preferences link at the top of the page. Then click the Editing tab. Then check the box next to Enable section editing by right-clicking on section titles (JavaScript). And finally, click the Save button.
Now you will be able to right click on subheadings, which will open them up in the Wikipedia edit box when you do.
This only works with browsers that support Javascript (but all of the latest versions of all of the major browsers do).
Read more: Special:Preferences