From: "Dr. Tobias Quathamer" <toddy@debian.org>
Date: Sat, 6 Feb 2016 01:25:30 +0100
Subject: tzfile.5

---
 man5/tzfile.5 | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

--- a/man5/tzfile.5
+++ b/man5/tzfile.5
@@ -210,6 +210,22 @@
 .B tzh_timecnt
 is zero or the time argument is less than the first transition time recorded
 in the file.
+.\" http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=122906#47
+.\" Reviewed by upstream and rejected, May 2012
+.SH NOTES
+This manual page documents
+.I <tzfile.h>
+in the glibc source archive, see
+.IR timezone/tzfile.h .
+.PP
+It seems that timezone uses
+.B tzfile
+internally, but glibc refuses to expose it to userspace.  This is most
+likely because the standardised functions are more useful and
+portable, and actually documented by glibc.  It may only be in glibc
+just to support the non-glibc-maintained timezone data (which is
+maintained by some other entity).
+.\" End of patch
 .SS Version 2 format
 For version-2-format timezone files,
 the above header and data are followed by a second header and data,