Package gnome-screensaver

GNOME Screensaver

http://www.gnome.org

gnome-screensaver is a screen saver and locker that aims to have
simple, sane, secure defaults and be well integrated with the desktop.

General Commands (Section 1)
gnome-screensaver
GNOME Screensaver is the default screen saver and locker in a GNOME desktop. It is designed with simplicity and security in mind.
gnome-screensaver-command
gnome-screensaver-command is a tool for controlling an already running instance of gnome-screensaver.