MENU_PKG_XFCE4
  Here you'll find options for XFce 4.

ROCKCFG_PKG_XFCE4_CORE_PREFIX
  Please enter the prefix where you want XFce 4 to be installed.

ROCKCFG_PKG_XFCE4_SANS11
  The default XFce font, Sans 10, does not exist in many non-ISO8859
  environments and is substituted. The substitution font for Sans 11
  usually looks better. Of course, you can always change the fonts
  via XFce settings manager.