@@ -2520,9 +2520,11 @@ subdirectories for geographical areas; for example,
@file{America/New_York}, @file{Europe/London}, @file{Asia/Hong_Kong}.
These data files are installed by the system administrator, who also
sets @file{/etc/localtime} to point to the data file for the local time
-zone. @Theglibc{} comes with a large database of time zone
+zone. @Theglibc{} is compatible with the Time Zone Database, sometimes
+called tz, or zoneinfo. This is a large database of time zone
information for most regions of the world, which is maintained by a
-community of volunteers and put in the public domain.
+community of volunteers and put in the public domain. It is located at
+@url{http://www.iana.org/time-zones}.
@node Time Zone Functions
@subsection Functions and Variables for Time Zones