Hi Dean, If you are going to be customizing the DTD, I would highly recommend browsing the LiveDTD version so you can see how and where parameter entities are defined:
http://www.sagehill.net/livedtd/docbook45/ If you click on "equation" in the left column, you find the declarations for the equation element in the DTD. For attributes, you want to look at the <!ATTLIST equation ...> part. In there, you will see a %local.equation.attrib; parameter entity, and when you click on that you will see it is declared as empty. That is a placeholder for any new attributes you care to add to the DTD All elements have such a PE for customization. It can be declared as: <!ENTITY % local.equation.attrib "width CDATA #IMPLIED"> You just need to declare your version before the stock version of that parameter entity. Bob Stayton Sagehill Enterprises [email protected] ----- Original Message ----- From: [email protected] To: [email protected] ; [email protected] Sent: Tuesday, March 10, 2009 10:56 AM Subject: Re: [docbook-apps] Adding a new attribute to EQUATION element Bob, I'm using the 4.5 DTD with a mod file. I have modified the equation.content entry to allow mml:math and xi:include items <!ENTITY % equation.content "(alt?, (graphic+|mediaobject+|mathphrase+|%mathml-math;+|xi:include))"> but I can't figure out how to add a simple attribute ;-) I have tried to use the info out of the latest TDG but it looks like even that is not up to date and there are some wrapping for modules that happen in the new dbpoolx file that I don't understand yet. There must be a simple way...... Dean In a message dated 3/10/2009 10:14:44 A.M. Pacific Daylight Time, [email protected] writes: Hi Dean, Are you using a DTD or RNG schema? And when you mention customization layer, I presume you mean the customization of the schema? Bob Stayton Sagehill Enterprises [email protected] ----- Original Message ----- From: [email protected] To: [email protected] Sent: Tuesday, March 10, 2009 12:10 AM Subject: [docbook-apps] Adding a new attribute to EQUATION element Hello everyone, I have wrestled my stylesheets to accept <equation align="center"> when I am using MathML. All of this works as I would like except validation in the editor. How do I add the "align" attribute for the EQUATION element to my customization layer so that my XML validates. Regards, Dean Nelson "Faith is acting before feeling." - Rick Warren -------------------------------------------------------------------------- A Good Credit Score is 700 or Above. See yours in just 2 easy steps! ------------------------------------------------------------------------------ A Good Credit Score is 700 or Above. See yours in just 2 easy steps!
