Mentioned 'apt_preferences(5)' in apt manpage.

debian/changelog

@@ -48,6 +48,7 @@ apt (0.7.17) unstable; urgency=low
     - Documented that 'apt-get install' command should be used for upgrading
       some of installed packages. Based on patch by Nori Heikkinen and
       Andre Felipe Machado. (Closes: #267087)
+    - Mentioned 'apt_preferences(5)' in apt manpage. (Closes: #274295)
 
  -- Eugene V. Lyubimkin <jackyf.devel@gmail.com>  Fri, 24 Oct 2008 23:45:17 +0300
 

doc/apt.8

@@ -37,6 +37,7 @@ None.
 .BR apt-get (8),
 .BR apt.conf (5),
 .BR sources.list (5),
+.BR apt_preferences (5),
 .BR apt-secure (8)
 .SH DIAGNOSTICS
 apt returns zero on normal operation, decimal 100 on error.