+ <section id="componentmodulesgrs">
+ <title>&acro.grs1; Record Model and Filter Modules</title>
+ <note>
+ <para>
+ The functionality of this record model has been improved and
+ replaced by the &acro.dom; &acro.xml; record model. See
+ <xref linkend="componentmodulesdom"/>.
+ </para>
+ </note>
+ <para>
+ The &acro.grs1; filter modules described in
+ <xref linkend="grs"/>
+ are all based on the &acro.z3950; specifications, and it is absolutely
+ mandatory to have the reference pages on &acro.bib1; attribute sets on
+ you hand when configuring &acro.grs1; filters. The GRS filters come in
+ different flavors, and a short introduction is needed here.
+ &acro.grs1; filters of various kind have also been called ABS filters due
+ to the <filename>*.abs</filename> configuration file suffix.
+ </para>
+ <para>
+ The <emphasis>grs.marc</emphasis> and
+ <emphasis>grs.marcxml</emphasis> filters are suited to parse and
+ index binary and &acro.xml; versions of traditional library &acro.marc; records
+ based on the ISO2709 standard. The Debian package for both
+ filters is
+ <literal>libidzebra-2.0-mod-grs-marc</literal>.
+ </para>
+ <para>
+ &acro.grs1; TCL scriptable filters for extensive user configuration come
+ in two flavors: a regular expression filter
+ <emphasis>grs.regx</emphasis> using TCL regular expressions, and
+ a general scriptable TCL filter called
+ <emphasis>grs.tcl</emphasis>
+ are both included in the
+ <literal>libidzebra-2.0-mod-grs-regx</literal> Debian package.
+ </para>
+ <para>
+ A general purpose &acro.sgml; filter is called
+ <emphasis>grs.sgml</emphasis>. This filter is not yet packaged,
+ but planned to be in the
+ <literal>libidzebra-2.0-mod-grs-sgml</literal> Debian package.
+ </para>
+ <para>
+ The Debian package
+ <literal>libidzebra-2.0-mod-grs-xml</literal> includes the
+ <emphasis>grs.xml</emphasis> filter which uses <ulink
+ url="&url.expat;">Expat</ulink> to
+ parse records in &acro.xml; and turn them into ID&zebra;'s internal &acro.grs1; node
+ trees. Have also a look at the Alvis &acro.xml;/&acro.xslt; filter described in
+ the next session.
+ </para>
+ </section>
+
+ <section id="componentmodulestext">
+ <title>TEXT Record Model and Filter Module</title>
+ <para>
+ Plain ASCII text filter. TODO: add information here.
+ </para>
+ </section>
+