If you are looking for specific information about Xfce 4, chances are you can obtain it from one of the resources in this list:

Use startxfce4 to start an Xfce session, which includes the session manager, the panel, the window manager and the desktop manager.

By default the Xfce session manager manages the startup of applications. It allows you to save your session when you quit Xfce, so that the next time you log in, the same applications will be started for you automatically.

To customize the behaviour of startxfce4, copy the file ${sysconfdir}/xdg/xfce4/xinitrc to your personal ~/.config/xfce4/ directory and edit that file. Depending on your installation method the location of the system xinitrc file may be different. If you install from source, ${sysconfdir} defaults to /usr/local/etc/. For binary packages it is often set to /etc/, /etc/X11, /usr/pkg/etc or /usr/X11R6/etc; you can use your package manager to find out.

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