The filename for recorded screencasts will be a unique filename based on the current date, and use this extension. It should be changed when recording to a different container format.
GNOME Shell will only load extensions that claim to support the current running version. Enabling this option will disable this check and try to load all extensions regardless of the versions they claim to support.
The shell will request a password when an encrypted device or a remote filesystem is mounted. If the password can be saved for future use a “Remember Password” checkbox will be present. This key sets the default state of the checkbox.