This is an old revision of the document!
http://ru.wikipedia.org/wiki/Менеджер_окон_X_Window_System
# pkg_add -r xfce4 # apt-get install xfce4
# cat ~userX/.xinitrc /usr/local/bin/xfce4-session
# cat ~userX/.xsession /usr/local/bin/xfce4-session