Preferences

Username
Watchlist token^[1]
Edit token^[2]
	Add pages I edit to my watchlist (otherwise remove) Mark all edits minor by default Rewrite forms to submit to secure.wikimedia.org [Deprecated] Apply common fixes automatically (Dab solver, Checklinks) Send anonymous usage statistics
	Reset to default settings Remove all cookies

Cookies:

↑ This keeps prevent your watchlist from changing. To use, setup setup a watchlist token in your preferences and copy it here. You also need to enter your username.
↑ Saving your edit token enables direct saving from the tools without previewing or the show changes screen. Edit tokens are an anti-spoofing feature built into MediaWiki and only held in memory for a few hours, it prevents other websites that you visit from performing actions as you (cross-site request forgery). Read more...