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-rw-r--r--doc/apt.ent4
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/apt.ent b/doc/apt.ent
index 19da4429e..c463f7811 100644
--- a/doc/apt.ent
+++ b/doc/apt.ent
@@ -261,7 +261,9 @@
<term><option>--config-file</option></term>
<listitem><para>Configuration File; Specify a configuration file to use.
The program will read the default configuration file and then this
- configuration file. See &apt-conf; for syntax information.
+ configuration file. If configuration settings need to be set before the
+ default configuration files are parsed specify a file with the <envar>APT_CONFIG</envar>
+ environment variable. See &apt-conf; for syntax information.
</para>
</listitem>
</varlistentry>