<?xml version="1.0"?>
<!DOCTYPE varlistentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
                              "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % entities.ent SYSTEM "entities.ent">
%entities.ent;
]>
<varlistentry>
<term><option>--trace<optional>=<replaceable>tracestreams</replaceable></optional></option></term>
<listitem>
<para>Enable trace messages.
<indexterm>
<primary>--trace=tracestreams</primary>
</indexterm>
The <replaceable>tracestreams</replaceable> argument, if specified, is
a comma-separated list of trace stream names (<xref
linkend="tracestreams"/>).</para>
</listitem>
</varlistentry>
