This key determines for which version the “Welcome to GNOME” dialog was last shown. An empty string represents the oldest possible version, and a huge number will represent versions that do not exist yet. This huge number can be used to effectively disable the dialog.
Layout of the app picker. Each entry in the array is a page. Pages are stored in the order they appear in GNOME Shell. Each page contains an “application id” → 'data' pair. Currently, the following values are stored as 'data': • “position”: the position of the application icon in the page
Configures how the windows are shown in the switcher. Valid possibilities are “thumbnail-only” (shows a thumbnail of the window), “app-icon-only” (shows only the application icon) or “both”.