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<!--
   Copyright (c) 1991 - 1993, Julianne Frances Haugh
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<varlistentry>
  <!-- XXX: When compiled with PAM support, only sulogin uses ENV_HZ -->
  <term><option>ENV_HZ</option> (string)</term>
  <listitem>
    <para>
      If set, it will be used to define the HZ environment variable when
      a user login. The value must be preceded by
      <replaceable>HZ=</replaceable>. A common value on Linux is
      <replaceable>HZ=100</replaceable>.
    </para>
    <para condition="pam">
      The <envar>HZ</envar> environment variable is only set when the user
      (the superuser) logs in with <command>sulogin</command>.
    </para>
    <!-- TODO: it can in fact be used to set any other variable-->
  </listitem>
</varlistentry>