url="http://www.freedesktop.org/wiki/Software/systemd/PasswordAgents">systemd
Password Agent Specification</ulink>.</para>
- <para>If a password is queried on a tty the user may
+ <para>If a password is queried on a TTY the user may
press TAB to hide the asterisks normally shown for
each character typed. Pressing Backspace as first key
achieves the same effect.</para>
<variablelist>
<varlistentry>
- <term><option>--h</option></term>
+ <term><option>-h</option></term>
<term><option>--help</option></term>
<listitem><para>Prints a short help
<listitem><para>Specify the query
timeout in seconds. Defaults to
- 90s.</para></listitem>
+ 90s. A timeout of 0 waits indefinitely.
+ </para></listitem>
</varlistentry>
<varlistentry>