==Enabling and Disabling Electrolysis==
To enable or disable e10sAn user facing checkbox is available in developer builds (Nightly, open Aurora) for controlling Electrolysis functionality. Open Preferences and check the "Enable multi-process" checkbox and then restart your browser.:
[[File:E10s-toggle-in-preferences.png|324x150px|frameless|Nightly > Preferences > General > Enable multi-process]]
If your browser breaks in a way that you can't easily recover to change this settingFor release builds (Beta, you can start Firefox in Safe Mode (by holding Alt/Option during startRelease, ESR) which should allow you to enter the Preferences dialog and untick the checkboxenabling Electrolysis is controlled through an internal preference.
== What to Expect ==
