+ <para>
+ Note that the default behavior for the environment is the
+ following:
+ <variablelist>
+ <varlistentry><term></term><listitem>
+ <para>
+ The <envar>$HOME</envar>, <envar>$SHELL</envar>,
+ <envar>$USER</envar>, <envar>$LOGNAME</envar>,
+ <envar>$PATH</envar>, and <envar>$IFS</envar>
+ environment variables are reset.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry><term></term><listitem>
+ <para>
+ If <option>--login</option> is used, the
+ <envar>$TERM</envar>, <envar>$COLORTERM</envar>,
+ <envar>$DISPLAY</envar>, and
+ <envar>$XAUTHORITY</envar> environment variables are
+ kept if they were set.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry condition="no_pam"><term></term><listitem>
+ <para>
+ If <option>--login</option> is used, the
+ <envar>$TZ</envar>, <envar>$HZ</envar>, and
+ <envar>$MAIL</envar> environment
+ variables are set according to the
+ <filename>/etc/login.defs</filename>
+ options <option>ENV_TZ</option>,
+ <option>ENV_HZ</option>, <option>MAIL_DIR</option>, and
+ <option>MAIL_FILE</option> (see below).
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry><term></term><listitem>
+ <para>
+ Other environment variables might be set by
+ <phrase condition="no_pam">the
+ <option>ENVIRON_FILE</option> file (see
+ below)</phrase><phrase condition="pam">PAM
+ modules</phrase>.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </para>