only needed by systems that are behind a http proxy.
</para>
<para>
- If no host is specified, the default is to send to twitter.com.
+ If --proxy is not specified but the environment variable
+ 'http_proxy' is set the latter will be used.
</para>
</listitem>
</varlistentry>
<filename>bti.example</filename> in the source tree that shows
the structure of the file if you need an example to work off of.
</para>
+ <para>
+ Configuration options have the following priority:
+ </para>
+ <variablelist>
+ <varlistentry>
+ <term></term>
+ <listitem><para>command line option</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term></term>
+ <listitem><para>config file option</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term></term>
+ <listitem><para>environment variables</para></listitem>
+ </varlistentry>
+ </variablelist>
+ <para>
+ For example, command line options always override any config file
+ option, or any environment variables.
+ </para>
</refsect1>
<refsect1><title>AUTHOR</title>