-# epoch, where EPOCH can be year, month, week, day, or hour. modeEPOCH defines
-# the backup mode for that particular epoch. Mode can be full, diff or incr.
+# epoch, where EPOCH can be year, month, week, day, or hour. If the number is 0
+# then no backup iscreated for that epoch. modeEPOCH defines the backup mode
+# for that particular epoch. Mode can be full, diff or incr.