+The following figures show rating statistics grouped by the
+respective operating system and use the same system color code
+as in the figure above. The segments in each bar indicate the
+frequency of individual rating options (from *definitely disagree* to
+*definitely agree*) in up to four levels of color saturation.
+
+.. include:: figures/ratings_pers_os.rst
+.. include:: figures/ratings_man_os.rst
+.. include:: figures/ratings_virt_host_os.rst
+.. include:: figures/ratings_virt_guest_os.rst