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Glossary

Words used in this documentation

Compositor
The program that draws windows on the screen and passes them input: Wayfire or labwc in Aurora.
Wayland
The modern way Linux apps show windows. Older X11 apps run through Xwayland.
Shell
Aurora Shell: the top bar, dock, desktop, Spotlight, notifications and widgets. (Also: the command interpreter in a terminal, bash.)
Layer surface
A part of the desktop that isn't a window (bar, dock, wallpaper), drawn above or below windows.
Greeter
The login screen.
Session
Everything that runs from login to logout.
Snapshot
An instant copy of the system on btrfs, to go back to after a bad update.
Flatpak
A format for sandboxed apps that work on any distribution; Flathub is its main store.
Portal
The way sandboxed apps ask for files, the camera or the screen.
polkit
The system that asks for the administrator password for privileged actions.
Live session
Aurora running from the USB stick without installing.