<variablelist>
<varlistentry>
- <term><varname>-EINVAL</varname></term>
+ <term><constant>-EINVAL</constant></term>
<listitem><para>A specified parameter
is invalid.</para></listitem>
</varlistentry>
<varlistentry>
- <term><varname>-ENODATA</varname></term>
+ <term><constant>-ENODATA</constant></term>
<listitem><para>No timestamp or
sequence number information is