diff --git a/manual/catalog.xml b/manual/catalog.xml
new file mode 100644
index 0000000000..b605a109d2
--- /dev/null
+++ b/manual/catalog.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+<!DOCTYPE catalog
+   PUBLIC "-//OASIS/DTD Entity Resolution XML Catalog V1.0//EN"
+   "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
+<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
+    <rewriteSystem
+               systemIdStartString="/usr/share/sgml/docbook/"
+               rewritePrefix="/path/to/docbook/" />
+</catalog>
+
+<!-- 
+see http://www.sagehill.net/docbookxsl/Catalogs.html
+
+usage with xsltproc:
+XML_CATALOG_FILES="catalog.xml" make html
+-->
+