Reserved Categories

Reserved Categories have a desktop-specific meaning that has not been standardized (yet). Desktop entry files that use a reserved category MUST also include an appropriate OnlyShowIn= entry to restrict themselves to those environments that properly support the reserved category as used.

The table below describes Reserved Categories.

Reserved CategoryDescription
ScreensaverA screen saver (launching this desktop entry should activate the screen saver)
TrayIconAn application that is primarily an icon for the "system tray" or "notification area" (apps that open a normal window and just happen to have a tray icon as well should not list this category)
AppletAn applet that will run inside a panel or another such application, likely desktop specific
ShellA shell (an actual specific shell such as bash or tcsh, not a TerminalEmulator)