system_cmds-790.tar.gz

[apple/system_cmds.git] / zic.tproj / README

diff --git a/zic.tproj/README b/zic.tproj/README
index 985a5118468fe0d7f4667e4b362a1af89b124286..ff974e919d0bae73d1044cf0aa7f0fd4a039ea8b 100644 (file)
--- a/zic.tproj/README
+++ b/zic.tproj/README
@@ -1,4 +1,8 @@
-@(#)README     7.11
+@(#)README     8.3
+This file is in the public domain, so clarified as of
+2009-05-17 by Arthur David Olson.
+
+$FreeBSD: head/contrib/tzcode/zic/README 192890 2009-05-27 12:18:39Z edwin $
 
 "What time is it?" -- Richard Deacon as The King
 "Any time you want it to be." -- Frank Baxter as The Scientist
@@ -52,8 +56,10 @@ substituting your desired installation directory for "$HOME/tzdir":
 
 To use the new functions, use a "-ltz" option when compiling or linking.
 
-Historical local time information has been included here not because it
-is particularly useful, but rather to:
+Historical local time information has been included here to:
+
+*      provide a compendium of data about the history of civil time
+       that is useful even if the data are not 100% accurate;
 
 *      give an idea of the variety of local time rules that have
        existed in the past and thus an idea of the variety that may be
@@ -63,7 +69,9 @@ is particularly useful, but rather to:
        system.
 
 The information in the time zone data files is by no means authoritative;
-if you know that the rules are different from those in a file, by all means
+the files currently do not even attempt to cover all time stamps before
+1970, and there are undoubtedly errors even for time stamps since 1970.
+If you know that the rules are different from those in a file, by all means
 feel free to change file (and please send the changed version to
 tz@elsie.nci.nih.gov for use in the future).  Europeans take note!