locale.conf: explain what all the settings are about

src/modules/locale/locale.conf

@@ -1,7 +1,28 @@
 ---
+# This settings are used to set your default system time zone.
+# Time zones are usually located under /usr/share/zoneinfo and
+# provided by the 'tzdata' package of your Distribution.
+#
+# Distributions using systemd can list available
+# time zones by using the timedatectl command.
+#    timedatectl list-timezones
 region:                     "America"
 zone:                       "New_York"
 
-# GeoIP settings. Leave commented out to disable GeoIP.
-#localeGenPath:             "/etc/locale.gen"
+
+# System locales are detected in the following order:
+#
+# /usr/share/i18n/SUPPORTED
+#  localeGenPath ( when set )
+#   /etc/locale.gen
+#    'locale -a' output
+# Enable only when your Distribution is using an
+# custom path for locale.gen
+#localeGenPath:             "PATH_TO/locale.gen"
+
+# GeoIP based Language settings:
+# GeoIP need an working Internet connecion.
+# This can be managed from welcome.conf by adding
+# internet to the list of required conditions.
+# Leave commented out to disable GeoIP.
 #geoipUrl:                  "freegeoip.net"