+<refsect1><title>DUMP SPECIFICATIONS</title> <para>A dump
+specification selects one or more dumps. It has the form <emphasis
+remap="I">[host][:disk][@datestamp]</emphasis>, where each component
+is a pattern as described above. If a component is missing, it
+is treated as a wildcard. The characters ':', '@', and '\' may be
+escaped within any component by preceding them with a '\'.</para>
+
+<para>Some examples:</para>
+
+<informaltable frame="none">
+<tgroup cols="2" align="left">
+<tbody>
+
+<row>
+<entry>DUMPSPEC</entry>
+<entry>DESCRIPTION</entry>
+</row>
+
+<row>
+<entry>client17</entry>
+<entry>all dumps of client17</entry>
+</row>
+
+<row>
+<entry>@20080615</entry>
+<entry>All dumps on with datestamps matching 20080615</entry>
+</row>
+
+<row>
+<entry>webserver:/var/www</entry>
+<entry>All dumps of /var/www on host webserver</entry>
+</row>
+
+<row>
+<entry>webserver:/var/www@200806150317</entry>
+<entry>The dump of webserver with datestamp 200806150317</entry>
+</row>
+
+<row>
+<entry>:/var/www</entry>
+<entry>All dumps of /var/www on any host</entry>
+</row>
+
+</tbody>
+</tgroup>
+</informaltable>
+
+
+</refsect1>
+
+<refsect1><title>CONFIGURATION OVERRIDE</title>
+<para>Most commands allow the override of specific
+configuration options on the command line, using the <arg
+choice="plain">-o</arg> option. This option has the form <arg
+choice="plain">-o</arg><replaceable>name</replaceable>=<replaceable>value</replaceable>.
+An optional space is allowed after the <arg choice="plain">-o</arg>.
+Each configuration option should be specified in a separate
+command-line option.</para>
+
+<para>For global options, <replaceable>name</replaceable> is simply the name of the option, e.g.,
+<programlisting>
+amdump -oruntapes=2
+</programlisting>
+For options in a named section of the configuration, <replaceable>name</replaceable> has the
+form <replaceable>SECTION</replaceable>:<replaceable>section_name</replaceable>:<replaceable>name</replaceable>,
+where <replaceable>SECTION</replaceable> is one of TAPETYPE, DUMPTYPE, HOLDINGDISK, or INTERFACE, and
+<replaceable>section_name</replaceable> is the name of the tapetype, dumptype, holdingdisk, or interface.
+Examples:
+<programlisting>
+amdump -o TAPETYPE:HP-DAT:length=2000m
+amdump -o DUMPTYPE:no-compress:compress="server fast"
+amdump -o HOLDINGDISK:hd1:use="-100 mb"
+amdump -o INTERFACE:local:use="2000 kbps"
+</programlisting>
+</para>
+
+<para>Note that configuration overrides are not effective for tape
+changers, which supply a tapedev based on their own configuration. In order to
+override <emphasis remap="I">tapedev</emphasis>, you must also disable any changer:
+<programlisting>
+amdump -otapedev=/dev/nst1 -otpchanger=''
+</programlisting>
+</para>
+
+</refsect1>
+