This is very simple documentation for the 'override' GSettings key for gnome-setting-daemon's xsettings plugin. The override is given as a dictionary of overrides to be applied on top of the usual values that are exported to the X server as XSETTINGS. The intent of this is to allow users to override values of programmatically determined settings (such as 'Gtk/ShellShowsAppMenu') and to allow developers to introduce new XSETTINGS for testing (without having to kill the gnome-settings-daemon running in the session and run their own patched version). The type of the overrides is 'a{sv}'. The key gives the full XSETTINGS setting name to override (for example, 'Gtk/ShellShowsAppMenu'). The value is one of the following: - a string ('s') for the case of a string XSETTING - an int32 ('i') for the case of an integer XSETTING - a 4-tuple of uint16s ('(qqqq)') for the case of a color XSETTING Dictionary items with a value that is not one of the above types will be ignored. Specifically note that XSETTINGS does not have a concept of booleans -- you must use an integer that is either 0 or 1. An example setting for this key (as expressed in GVariant text format) might be: { 'Gtk/ShellShowsAppMenu': < 0 >, 'Xft/DPI': < 98304 > } Noting that variants must be specified in the usual way (wrapped in <>). Note also that DPI in the above example is expressed in 1024ths of an inch.