Omni Systems, Inc. |  | Mif2Go User's Guide, Version 55 |  |  |  |  |

> 32 Working with content models > 32.7 Specializing or modifying DITA topic types

## 32.7 Specializing or modifying DITA topic types

To include custom specialized topic types or maps in your DITA project, you must provide a separate content-model configuration file for each new topic type or modified map or bookmap DTD. You can derive a new type from any of the built-in topic types topic, concept, task, reference, map, or glossary (DITA 1.1 only), or from another specialized type for which you provide a DTD.

To produce the constraints supported by DITA 1.2, you can run utility program dtd2ini (see §32.2.2 Generating a content model from a DTD) on a local document type shell, and reference the result in your project configuration chain.

In this section:

§32.7.1 Creating a content model for a specialized topic type

§32.7.2 Overriding settings in a DITA content model

§32.7.4 Overriding declarations in a DITA map content model

§32.7.5 Listing DITA topic type configuration files

§32.7.6 Locating DITA topic type configuration files

§32.7.7 Providing table structure information for DITA topic types

> 32 Working with content models > 32.7 Specializing or modifying DITA topic types

| Mif2Go User's Guide: 32.6 Inspecting and correcting element types |  | Mif2Go User's Guide: 32.7.1 Creating a content model for a specialized topic type |