Configure the custom map shell DTD for DITA 1.2
Important: Follow these instructions only if you are not using the Dynamic Release Module (DRM). If you are using DRM, use the
following topic, Configure the custom map shell DTD (DRM) for DITA 1.2.
Even if you don't anticipate needing a custom map shell at this point, it's very likely that you will. For example, if you specialize any conditional/profiling attributes, you will probably want to be able to use them on topicref elements within maps as well as on elements within topics. To make sure you have the environment you need from the start, it's a good idea to go ahead and create a custom map shell.
Next, you need to edit the catalog in your custom DTD plugin to point to your two shell DTDs.