diff --git a/.etckeeper b/.etckeeper
index a1c10029..e0f40a27 100755
--- a/.etckeeper
+++ b/.etckeeper
@@ -2110,6 +2110,21 @@ maybe chmod 0644 'sensors3.conf'
 maybe chmod 0644 'services'
 maybe chmod 0644 'sestatus.conf'
 maybe chmod 0755 'sgml'
+maybe chmod 0755 'sgml/docbook-xml'
+maybe chmod 0644 'sgml/docbook-xml.cat'
+maybe chmod 0755 'sgml/docbook-xml/4.0'
+maybe chmod 0644 'sgml/docbook-xml/4.0/dbgenent.ent'
+maybe chmod 0755 'sgml/docbook-xml/4.1.2'
+maybe chmod 0644 'sgml/docbook-xml/4.1.2/dbgenent.mod'
+maybe chmod 0755 'sgml/docbook-xml/4.2'
+maybe chmod 0644 'sgml/docbook-xml/4.2/dbgenent.mod'
+maybe chmod 0755 'sgml/docbook-xml/4.3'
+maybe chmod 0644 'sgml/docbook-xml/4.3/dbgenent.mod'
+maybe chmod 0755 'sgml/docbook-xml/4.4'
+maybe chmod 0644 'sgml/docbook-xml/4.4/dbgenent.mod'
+maybe chmod 0755 'sgml/docbook-xml/4.5'
+maybe chmod 0644 'sgml/docbook-xml/4.5/dbgenent.mod'
+maybe chmod 0644 'sgml/sgml-data.cat'
 maybe chmod 0644 'sgml/xml-core.cat'
 maybe chgrp 'shadow' 'shadow'
 maybe chmod 0640 'shadow'
@@ -2229,6 +2244,11 @@ maybe chmod 0755 'xdg/systemd'
 maybe chmod 0644 'xdg/user-dirs.conf'
 maybe chmod 0644 'xdg/user-dirs.defaults'
 maybe chmod 0755 'xml'
+maybe chmod 0644 'xml/catalog'
+maybe chmod 0644 'xml/docbook-xml.xml'
+maybe chmod 0644 'xml/docbook-xsl.xml'
+maybe chmod 0644 'xml/sgml-data.xml'
+maybe chmod 0644 'xml/xml-core.xml'
 maybe chmod 0755 'zsh'
 maybe chmod 0644 'zsh/newuser.zshrc.recommended'
 maybe chmod 0644 'zsh/zlogin'
diff --git a/sgml/docbook-xml.cat b/sgml/docbook-xml.cat
new file mode 100644
index 00000000..736e2542
--- /dev/null
+++ b/sgml/docbook-xml.cat
@@ -0,0 +1,7 @@
+CATALOG /usr/share/xml/docbook/schema/dtd/catalog
+CATALOG /usr/share/xml/docbook/schema/dtd/4.0/catalog
+CATALOG /usr/share/xml/docbook/schema/dtd/4.1.2/catalog
+CATALOG /usr/share/xml/docbook/schema/dtd/4.2/catalog
+CATALOG /usr/share/xml/docbook/schema/dtd/4.3/catalog
+CATALOG /usr/share/xml/docbook/schema/dtd/4.4/catalog
+CATALOG /usr/share/xml/docbook/schema/dtd/4.5/catalog
diff --git a/sgml/docbook-xml/4.0/dbgenent.ent b/sgml/docbook-xml/4.0/dbgenent.ent
new file mode 100644
index 00000000..1ad77473
--- /dev/null
+++ b/sgml/docbook-xml/4.0/dbgenent.ent
@@ -0,0 +1,41 @@
+<!-- ...................................................................... -->
+<!-- DocBook XML additional general entities V4.0 ......................... -->
+
+<!-- Copyright 1992-2000 HaL Computer Systems, Inc.,
+     O'Reilly & Associates, Inc., ArborText, Inc., Fujitsu Software
+     Corporation, and the Organization for the Advancement of
+     Structured Information Standards (OASIS).
+
+     In DTD driver files referring to this module, please use an entity
+     declaration that uses the public identifier shown below:
+
+     <!ENTITY % dbgenent PUBLIC
+     "-//OASIS//ENTITIES DocBook Additional General Entities V4.0//EN"
+     "dbgenent.ent">
+     %dbgenent;
+-->
+
+<!-- File dbgenent.mod .................................................... -->
+
+<!-- You can edit this file to add the following:
+
+     o General entity declarations of any kind.  For example:
+
+       <!ENTITY happyface SDATA "insert-face">    (system-specific data)
+       <!ENTITY productname "WinWidget">          (small boilerplate)
+       <!ENTITY legal-notice SYSTEM "notice.sgm"> (large boilerplate)
+
+     o Notation declarations.  For example:
+
+       <!NOTATION chicken-scratch SYSTEM>
+
+     o Declarations for and references to external parameter entities
+       containing collections of any of the above.  For example:
+
+       <!ENTITY % all-titles PUBLIC "-//DocTools//ELEMENTS Book Titles//EN"
+           "booktitles.ent">
+       %all-titles;
+-->
+
+<!-- End of DocBook XML additional general entities V4.0 .................. -->
+<!-- ...................................................................... -->
diff --git a/sgml/docbook-xml/4.1.2/dbgenent.mod b/sgml/docbook-xml/4.1.2/dbgenent.mod
new file mode 100644
index 00000000..5dc9a41e
--- /dev/null
+++ b/sgml/docbook-xml/4.1.2/dbgenent.mod
@@ -0,0 +1,41 @@
+<!-- ...................................................................... -->
+<!-- DocBook XML additional general entities V4.1.2 ......................... -->
+
+<!-- Copyright 1992-2000 HaL Computer Systems, Inc.,
+     O'Reilly & Associates, Inc., ArborText, Inc., Fujitsu Software
+     Corporation, and the Organization for the Advancement of
+     Structured Information Standards (OASIS).
+
+     In DTD driver files referring to this module, please use an entity
+     declaration that uses the public identifier shown below:
+
+     <!ENTITY % dbgenent PUBLIC
+     "-//OASIS//ENTITIES DocBook XML Additional General Entities V4.1.2//EN"
+     "dbgenent.mod">
+     %dbgenent;
+-->
+
+<!-- File dbgenent.mod .................................................... -->
+
+<!-- You can edit this file to add the following:
+
+     o General entity declarations of any kind.  For example:
+
+       <!ENTITY happyface SDATA "insert-face">    (system-specific data)
+       <!ENTITY productname "WinWidget">          (small boilerplate)
+       <!ENTITY legal-notice SYSTEM "notice.sgm"> (large boilerplate)
+
+     o Notation declarations.  For example:
+
+       <!NOTATION chicken-scratch SYSTEM>
+
+     o Declarations for and references to external parameter entities
+       containing collections of any of the above.  For example:
+
+       <!ENTITY % all-titles PUBLIC "-//DocTools//ELEMENTS Book Titles//EN"
+           "booktitles.ent">
+       %all-titles;
+-->
+
+<!-- End of DocBook XML additional general entities V4.1.2 .................. -->
+<!-- ...................................................................... -->
diff --git a/sgml/docbook-xml/4.2/dbgenent.mod b/sgml/docbook-xml/4.2/dbgenent.mod
new file mode 100644
index 00000000..7eed03ce
--- /dev/null
+++ b/sgml/docbook-xml/4.2/dbgenent.mod
@@ -0,0 +1,41 @@
+<!-- ...................................................................... -->
+<!-- DocBook additional general entities V4.2 ............................. -->
+
+<!-- Copyright 1992-2002 HaL Computer Systems, Inc.,
+     O'Reilly & Associates, Inc., ArborText, Inc., Fujitsu Software
+     Corporation, Norman Walsh, Sun Microsystems, Inc., and the
+     Organization for the Advancement of Structured Information
+     Standards (OASIS).
+
+     In DTD driver files referring to this module, please use an entity
+     declaration that uses the public identifier shown below:
+
+     <!ENTITY % dbgenent PUBLIC
+     "-//OASIS//ENTITIES DocBook Additional General Entities V4.2//EN"
+     "dbgenent.mod">
+     %dbgenent;
+-->
+
+<!-- File dbgenent.mod .................................................... -->
+
+<!-- You can edit this file to add the following:
+
+     o General entity declarations of any kind.  For example:
+
+       <!ENTITY productname "WinWidget">          (small boilerplate)
+       <!ENTITY legal-notice SYSTEM "notice.sgm"> (large boilerplate)
+
+     o Notation declarations.  For example:
+
+       <!NOTATION chicken-scratch SYSTEM>
+
+     o Declarations for and references to external parameter entities
+       containing collections of any of the above.  For example:
+
+       <!ENTITY % all-titles PUBLIC "-//DocTools//ELEMENTS Book Titles//EN"
+           "booktitles.ent">
+       %all-titles;
+-->
+
+<!-- End of DocBook additional general entities V4.2 ...................... -->
+<!-- ...................................................................... -->
diff --git a/sgml/docbook-xml/4.3/dbgenent.mod b/sgml/docbook-xml/4.3/dbgenent.mod
new file mode 100644
index 00000000..3033344c
--- /dev/null
+++ b/sgml/docbook-xml/4.3/dbgenent.mod
@@ -0,0 +1,41 @@
+<!-- ...................................................................... -->
+<!-- DocBook additional general entities V4.3 ............................. -->
+
+<!-- Copyright 1992-2002 HaL Computer Systems, Inc.,
+     O'Reilly & Associates, Inc., ArborText, Inc., Fujitsu Software
+     Corporation, Norman Walsh, Sun Microsystems, Inc., and the
+     Organization for the Advancement of Structured Information
+     Standards (OASIS).
+
+     In DTD driver files referring to this module, please use an entity
+     declaration that uses the public identifier shown below:
+
+     <!ENTITY % dbgenent PUBLIC
+     "-//OASIS//ENTITIES DocBook Additional General Entities V4.3//EN"
+     "dbgenent.mod">
+     %dbgenent;
+-->
+
+<!-- File dbgenent.mod .................................................... -->
+
+<!-- You can edit this file to add the following:
+
+     o General entity declarations of any kind.  For example:
+
+       <!ENTITY productname "WinWidget">          (small boilerplate)
+       <!ENTITY legal-notice SYSTEM "notice.sgm"> (large boilerplate)
+
+     o Notation declarations.  For example:
+
+       <!NOTATION chicken-scratch SYSTEM>
+
+     o Declarations for and references to external parameter entities
+       containing collections of any of the above.  For example:
+
+       <!ENTITY % all-titles PUBLIC "-//DocTools//ELEMENTS Book Titles//EN"
+           "booktitles.ent">
+       %all-titles;
+-->
+
+<!-- End of DocBook additional general entities V4.3 ...................... -->
+<!-- ...................................................................... -->
diff --git a/sgml/docbook-xml/4.4/dbgenent.mod b/sgml/docbook-xml/4.4/dbgenent.mod
new file mode 100644
index 00000000..20f717a2
--- /dev/null
+++ b/sgml/docbook-xml/4.4/dbgenent.mod
@@ -0,0 +1,41 @@
+<!-- ...................................................................... -->
+<!-- DocBook additional general entities V4.4 ............................. -->
+
+<!-- Copyright 1992-2004 HaL Computer Systems, Inc.,
+     O'Reilly & Associates, Inc., ArborText, Inc., Fujitsu Software
+     Corporation, Norman Walsh, Sun Microsystems, Inc., and the
+     Organization for the Advancement of Structured Information
+     Standards (OASIS).
+
+     In DTD driver files referring to this module, please use an entity
+     declaration that uses the public identifier shown below:
+
+     <!ENTITY % dbgenent PUBLIC
+     "-//OASIS//ENTITIES DocBook Additional General Entities V4.4//EN"
+     "dbgenent.mod">
+     %dbgenent;
+-->
+
+<!-- File dbgenent.mod .................................................... -->
+
+<!-- You can edit this file to add the following:
+
+     o General entity declarations of any kind.  For example:
+
+       <!ENTITY productname "WinWidget">          (small boilerplate)
+       <!ENTITY legal-notice SYSTEM "notice.sgm"> (large boilerplate)
+
+     o Notation declarations.  For example:
+
+       <!NOTATION chicken-scratch SYSTEM>
+
+     o Declarations for and references to external parameter entities
+       containing collections of any of the above.  For example:
+
+       <!ENTITY % all-titles PUBLIC "-//DocTools//ELEMENTS Book Titles//EN"
+           "booktitles.ent">
+       %all-titles;
+-->
+
+<!-- End of DocBook additional general entities V4.4 ...................... -->
+<!-- ...................................................................... -->
diff --git a/sgml/docbook-xml/4.5/dbgenent.mod b/sgml/docbook-xml/4.5/dbgenent.mod
new file mode 100644
index 00000000..ff5ba90d
--- /dev/null
+++ b/sgml/docbook-xml/4.5/dbgenent.mod
@@ -0,0 +1,41 @@
+<!-- ...................................................................... -->
+<!-- DocBook additional general entities V4.5 ............................. -->
+
+<!-- Copyright 1992-2004 HaL Computer Systems, Inc.,
+     O'Reilly & Associates, Inc., ArborText, Inc., Fujitsu Software
+     Corporation, Norman Walsh, Sun Microsystems, Inc., and the
+     Organization for the Advancement of Structured Information
+     Standards (OASIS).
+
+     In DTD driver files referring to this module, please use an entity
+     declaration that uses the public identifier shown below:
+
+     <!ENTITY % dbgenent PUBLIC
+     "-//OASIS//ENTITIES DocBook Additional General Entities V4.5//EN"
+     "dbgenent.mod">
+     %dbgenent;
+-->
+
+<!-- File dbgenent.mod .................................................... -->
+
+<!-- You can edit this file to add the following:
+
+     o General entity declarations of any kind.  For example:
+
+       <!ENTITY productname "WinWidget">          (small boilerplate)
+       <!ENTITY legal-notice SYSTEM "notice.sgm"> (large boilerplate)
+
+     o Notation declarations.  For example:
+
+       <!NOTATION chicken-scratch SYSTEM>
+
+     o Declarations for and references to external parameter entities
+       containing collections of any of the above.  For example:
+
+       <!ENTITY % all-titles PUBLIC "-//DocTools//ELEMENTS Book Titles//EN"
+           "booktitles.ent">
+       %all-titles;
+-->
+
+<!-- End of DocBook additional general entities V4.5 ...................... -->
+<!-- ...................................................................... -->
diff --git a/sgml/sgml-data.cat b/sgml/sgml-data.cat
new file mode 100644
index 00000000..b17bc8ef
--- /dev/null
+++ b/sgml/sgml-data.cat
@@ -0,0 +1,13 @@
+CATALOG /usr/share/sgml/dtd/catalog
+CATALOG /usr/share/sgml/entities/ArborText/catalog
+CATALOG /usr/share/sgml/entities/Hewlett-Packard/catalog
+CATALOG /usr/share/sgml/entities/sgml-iso-entities-8879.1986/catalog
+CATALOG /usr/share/sgml/entities/sgml-iso-entities-9573-13.1991/catalog
+CATALOG /usr/share/sgml/html/dtd/catalog
+CATALOG /usr/share/sgml/html/dtd/4.0/catalog
+CATALOG /usr/share/sgml/html/dtd/4.01/catalog
+CATALOG /usr/share/sgml/html/dtd/iso-15445/catalog
+CATALOG /usr/share/sgml/html/entities/catalog
+CATALOG /usr/share/xml/qaml/catalog
+CATALOG /usr/share/xml/svg/catalog
+CATALOG /usr/share/xml/entities/xml-iso-entities-8879.1986/catalog
diff --git a/xml/catalog b/xml/catalog
new file mode 100644
index 00000000..f750d3fd
--- /dev/null
+++ b/xml/catalog
@@ -0,0 +1,33 @@
+<?xml version="1.0"?>
+<!DOCTYPE catalog PUBLIC "-//OASIS//DTD XML Catalogs V1.0//EN"
+  "file:///usr/share/xml/schema/xml-core/catalog.dtd">
+<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
+<delegatePublic publicIdStartString="+//IDN faq.org//DTD Frequently Asked Questions" catalog="file:///etc/xml/sgml-data.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//DTD CALS Table Model XML" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegateSystem systemIdStartString="http://docbook.org/xml/" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//ENTITIES DocBk XML" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//DTD DocBook XML" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//ELEMENTS DocBk XML" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook CALS Table Model" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegateSystem systemIdStartString="http://www.w3.org/Graphics/SVG/1.1/" catalog="file:///etc/xml/sgml-data.xml"/>
+<delegateSystem systemIdStartString="http://www.w3.org/TR/2001/REC-SVG-20010904/" catalog="file:///etc/xml/sgml-data.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD XML Catalogs V1.0//EN" catalog="file:///etc/xml/xml-core.xml"/>
+<delegateSystem systemIdStartString="http://globaltranscorp.org/oasis/catalog/xml/tr9401.dtd" catalog="file:///etc/xml/xml-core.xml"/>
+<delegatePublic publicIdStartString="ISO 8879:1986//ENTITIES" catalog="file:///etc/xml/sgml-data.xml"/>
+<delegateSystem systemIdStartString="http://xml.ascc.net/xml/resource/qaml-xml" catalog="file:///etc/xml/sgml-data.xml"/>
+<delegatePublic publicIdStartString="-//GlobalTransCorp//DTD XML Catalogs V1.0-Based Extension V1.0//EN" catalog="file:///etc/xml/xml-core.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD XML Exchange Table Model 19990315" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegateSystem systemIdStartString="/usr/share/sgml/dtd/svg" catalog="file:///etc/xml/sgml-data.xml"/>
+<delegateURI uriStartString="http://docbook.sourceforge.net/release/xsl/" catalog="file:///etc/xml/docbook-xsl.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegatePublic publicIdStartString="-//Normal Walsh//Exchange Table Model 19960430" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegateSystem systemIdStartString="http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd" catalog="file:///etc/xml/xml-core.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//DTD DocBk XML" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegatePublic publicIdStartString="-//W3C//DTD SVG" catalog="file:///etc/xml/sgml-data.xml"/>
+<delegateSystem systemIdStartString="/usr/share/sgml/dtd/qaml-xml.dtd" catalog="file:///etc/xml/sgml-data.xml"/>
+<delegateSystem systemIdStartString="http://docbook.sourceforge.net/release/xsl/" catalog="file:///etc/xml/docbook-xsl.xml"/>
+<delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/xml/" catalog="file:///etc/xml/docbook-xml.xml"/>
+<delegatePublic publicIdStartString="+//ISBN 82-7640-023//DTD Frequently Asked Questions//EN" catalog="file:///etc/xml/sgml-data.xml"/>
+</catalog>
diff --git a/xml/docbook-xml.xml b/xml/docbook-xml.xml
new file mode 100644
index 00000000..2d445e21
--- /dev/null
+++ b/xml/docbook-xml.xml
@@ -0,0 +1,69 @@
+<?xml version="1.0"?>
+<!DOCTYPE catalog PUBLIC "-//OASIS//DTD XML Catalogs V1.0//EN"
+  "file:///usr/share/xml/schema/xml-core/catalog.dtd">
+<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
+<delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/4.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook CALS Table Model V4.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook Document Hierarchy V4.3//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.3/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook XML HTML Tables V4.4//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.4/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook Information Pool V4.4//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.4/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML V4//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/catalog.xml"/>
+<delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/xml/4.1/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook Information Pool V4.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.2/catalog.xml"/>
+<delegateSystem systemIdStartString="http://docbook.org/xml/4.1.2/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/4.1.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//ELEMENTS DocBook XML Document Hierarchy V4.0//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.0/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Notations V4.3//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.3/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML V4.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.2/catalog.xml"/>
+<delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/4.3/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Character Entities V4.5//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Character Entities V4.3//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.3/catalog.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//ENTITIES DocBook XML Notations V4.0//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.0/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Notations V4.5//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook XML Information Pool V4.1.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.1.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Character Entities V4.1.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.1.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//DTD DocBk XML V4.0//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.0/catalog.xml"/>
+<delegateSystem systemIdStartString="http://docbook.org/xml/4.3/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/4.3/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook Document Hierarchy V4.4//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.4/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Additional General Entities V4.4//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.4/catalog.xml"/>
+<delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/>
+<delegateSystem systemIdStartString="http://docbook.org/xml/4.5/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/>
+<delegateSystem systemIdStartString="http://docbook.org/xml/4.4/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/4.4/catalog.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//DTD DocBook XML V4.0//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.0/catalog.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//ENTITIES DocBook XML Additional General Entities V4.0//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.0/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook XML HTML Tables V4.3//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.3/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook XML HTML Tables V4.5//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook Document Hierarchy V4.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML V4.3//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.3/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Additional General Entities V4.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML V4.4//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.4/catalog.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//DTD CALS Table Model XML V4.0//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.0/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook CALS Table Model V4.1.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.1.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook Document Hierarchy V4.1.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.1.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML V4.1.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.1.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//Normal Walsh//Exchange Table Model 19960430 XML V4.0//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.0/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Additional General Entities V4.5//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//ENTITIES DocBook XML Character Entities V4.0//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.0/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook Information Pool V4.3//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.3/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook CALS Table Model V4.3//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.3/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Notations V4.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML V4.1//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/catalog.xml"/>
+<delegatePublic publicIdStartString="-//Norman Walsh//ELEMENTS DocBook XML Information Pool V4.0//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.0/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Additional General Entities V4.3//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.3/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook Document Hierarchy V4.5//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML V4.5//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook CALS Table Model V4.4//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.4/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Additional General Entities V4.1.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.1.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD XML Exchange Table Model 19990315//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ELEMENTS DocBook Information Pool V4.5//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/>
+<delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/xml/4.0/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/4.0/catalog.xml"/>
+<delegateSystem systemIdStartString="http://docbook.org/xml/4.2/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/4.2/catalog.xml"/>
+<delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/4.1.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Notations V4.1.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.1.2/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Character Entities V4.4//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.4/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD DocBook CALS Table Model V4.5//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.5/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Character Entities V4.2//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.2/catalog.xml"/>
+<delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/4.4/catalog.xml"/>
+<delegateSystem systemIdStartString="http://docbook.org/xml/4.1/docbookx.dtd" catalog="file:///usr/share/xml/docbook/schema/dtd/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook Notations V4.4//EN" catalog="file:///usr/share/xml/docbook/schema/dtd/4.4/catalog.xml"/>
+</catalog>
diff --git a/xml/docbook-xsl.xml b/xml/docbook-xsl.xml
new file mode 100644
index 00000000..94bcaf59
--- /dev/null
+++ b/xml/docbook-xsl.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0"?>
+<!DOCTYPE catalog PUBLIC "-//OASIS//DTD XML Catalogs V1.0//EN"
+  "file:///usr/share/xml/schema/xml-core/catalog.dtd">
+<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
+<delegateURI uriStartString="http://docbook.sourceforge.net/release/xsl/" catalog="file:///usr/share/xml/docbook/stylesheet/docbook-xsl/catalog.xml"/>
+<delegateSystem systemIdStartString="http://docbook.sourceforge.net/release/xsl/" catalog="file:///usr/share/xml/docbook/stylesheet/docbook-xsl/catalog.xml"/>
+</catalog>
diff --git a/xml/sgml-data.xml b/xml/sgml-data.xml
new file mode 100644
index 00000000..52731609
--- /dev/null
+++ b/xml/sgml-data.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<!DOCTYPE catalog PUBLIC "-//OASIS//DTD XML Catalogs V1.0//EN"
+  "file:///usr/share/xml/schema/xml-core/catalog.dtd">
+<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
+<delegatePublic publicIdStartString="+//IDN faq.org//DTD Frequently Asked Questions" catalog="file:///usr/share/xml/qaml/catalog.xml"/>
+<delegatePublic publicIdStartString="+//ISBN 82-7640-023//DTD Frequently Asked Questions//EN" catalog="file:///usr/share/xml/qaml/catalog.xml"/>
+<delegatePublic publicIdStartString="-//W3C//DTD SVG" catalog="file:///usr/share/xml/svg/catalog.xml"/>
+<delegatePublic publicIdStartString="ISO 8879:1986//ENTITIES" catalog="file:///usr/share/xml/entities/xml-iso-entities-8879.1986/catalog.xml"/>
+<delegateSystem systemIdStartString="/usr/share/sgml/dtd/qaml-xml.dtd" catalog="file:///usr/share/xml/qaml/catalog.xml"/>
+<delegateSystem systemIdStartString="/usr/share/sgml/dtd/svg" catalog="file:///usr/share/xml/svg/catalog.xml"/>
+<delegateSystem systemIdStartString="http://www.w3.org/Graphics/SVG/1.1/" catalog="file:///usr/share/xml/svg/catalog.xml"/>
+<delegateSystem systemIdStartString="http://www.w3.org/TR/2001/REC-SVG-20010904/" catalog="file:///usr/share/xml/svg/catalog.xml"/>
+<delegateSystem systemIdStartString="http://xml.ascc.net/xml/resource/qaml-xml" catalog="file:///usr/share/xml/qaml/catalog.xml"/>
+</catalog>
diff --git a/xml/xml-core.xml b/xml/xml-core.xml
new file mode 100644
index 00000000..90943c29
--- /dev/null
+++ b/xml/xml-core.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0"?>
+<!DOCTYPE catalog PUBLIC "-//OASIS//DTD XML Catalogs V1.0//EN"
+  "file:///usr/share/xml/schema/xml-core/catalog.dtd">
+<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
+<delegatePublic publicIdStartString="-//GlobalTransCorp//DTD XML Catalogs V1.0-Based Extension V1.0//EN" catalog="file:///usr/share/xml/schema/xml-core/catalog.xml"/>
+<delegatePublic publicIdStartString="-//OASIS//DTD XML Catalogs V1.0//EN" catalog="file:///usr/share/xml/schema/xml-core/catalog.xml"/>
+<delegateSystem systemIdStartString="http://globaltranscorp.org/oasis/catalog/xml/tr9401.dtd" catalog="file:///usr/share/xml/schema/xml-core/catalog.xml"/>
+<delegateSystem systemIdStartString="http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd" catalog="file:///usr/share/xml/schema/xml-core/catalog.xml"/>
+</catalog>