Hello, You should add the XML catalog of DocBook XSL 1.75.2 on the first position in the list of XML catalogs of the DocBook doctype that is available in Preferences -> Document Type Association. If you are a content author (you are not allowed to edit the document type) you have to duplicate the DocBook 4 or DocBook 5 document type and add I:\My Documents\xml\docbook-xsl-1.75.2\catalog.xml on the Catalogs tab of the dialog for editing the document type: http://www.oxygenxml.com/doc/ug-oxygen/dg-complex-customization-tutorial.htm... If your catalog is on the first position it will be parsed before the built-in catalog of Oxygen. You can check that the XML catalog is used by right click on the href value of <xsl:import href="http://docbook.sourceforge.net/release/xsl/current/epub/docbook.xsl"/> and run the action Open File at Caret. The action should open the stylesheet from I:\My Documents\xml\docbook-xsl-1.75.2. Regards, Sorin Robert Nagle wrote:

I'm having a tough time understanding the process for adding to the catalog.

I am trying to make oxygen default to the 1.7.5.2 Docbook version (which was released a few weeks ago). I want to keep a local version available on my Windows machine.

I understand that I need to add something to the catalog, but where?

First, I see C:\Program Files (x86)\Oxygen XML Editor 10\frameworks\docbook\xsl\catalog.xml has this:

<?xml version="1.0" encoding="utf-8"?> <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"> <!-- XML Catalog file for DocBook XSL-NS v1.75.1 --> <rewriteURI uriStartString="http://docbook.sourceforge.net/release/xsl-ns/current/" rewritePrefix="./"/> <rewriteSystem systemIdStartString="http://docbook.sourceforge.net/release/xsl-ns/current/" rewritePrefix="./"/> <rewriteURI uriStartString="http://docbook.sourceforge.net/release/xsl-ns/1.75.1/" rewritePrefix="./"/> <rewriteSystem systemIdStartString="http://docbook.sourceforge.net/release/xsl-ns/1.75.1/" rewritePrefix="./"/> </catalog>

I'm not 100% sure, how I'd edit this file. Oxygen tells me that this file isn't editable (because it's under Program Files, not user space).

Would the appropriate syntax be something like this:

<rewriteURI uriStartString="http://docbook.sourceforge.net/release/xsl-ns/1.75.2/" rewritePrefix="I:\My Documents\xml\docbook-xsl-1.75.2\"/> <rewriteSystem systemIdStartString="http://docbook.sourceforge.net/release/xsl-ns/1.75.2/" rewritePrefix="I:\My Documents\xml\docbook-xsl-1.75.2\"/>

If I created an identical catalog.xml in my user folder (I:\My Documents\xml\docbook-xsl-1.75.2\) but switched out 1.7.5.2 for 1.7.5.1, would that be right?

Then Options --> Preferences --> XML Catalog --> Add new catalog --> browse for this new catalog.xml

is there an easy way for me to verify that the new local version of xsl file is actually being used?

If I just declare I<xsl:import href="http://docbook.sourceforge.net/release/xsl/current/epub/docbook.xsl"/> in my stylesheet, would that be enough (while taking slight hits on performance while the file is being downloaded).

Thanks.

Robert Nagle